0000950170-23-063250 | 10-Q | XBRL Viewer

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Customer Concentrations - Additional Information (Detail) - Customer Concentration Risk [Member] - Customer	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Revenues [Member] \| One Customer [Member]
Concentration Risk [Line Items]
Number of customers				1
Concentration percentage				46.00%
Revenues [Member] \| Two Customer [Member]
Concentration Risk [Line Items]
Number of customers		2
Concentration percentage		87.00%
Revenues [Member] \| Three Customer [Member]
Concentration Risk [Line Items]
Number of customers	3		3
Concentration percentage	75.00%		67.00%
Accounts Receivable [Member] \| One Customer [Member]
Concentration Risk [Line Items]
Number of customers					1
Concentration percentage					87.00%
Accounts Receivable [Member] \| Three Customer [Member]
Concentration Risk [Line Items]
Number of customers			3
Concentration percentage			93.00%

Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Summary of Fair Values of Stock Options Granted

The fair values of stock options granted during the second quarter of 2022 were estimated using the following assumptions:


	Three Months Ended June 30,
	2022
Stock price	$	25.40
Dividend yield		0	%
Expected volatility		108	%
Risk-free interest rate		1.92	%
Expected life	5.6 years

Summary of Stock Option Activity

The following is a summary of the Company’s stock option activity during the nine months ended September 30, 2023:

Number of
Options

Weighted
Average
Exercise
Price

Weighted
Average
Remaining
Life In
Years

Intrinsic
Value

Outstanding at January 1, 2023

15,013

25.42

8.9

–

Granted

–

–

–

–

Exercised

–

–

–

–

Forfeited

(13

)

49.80

–

–

Outstanding at September 30, 2023

15,000

25.40

8.2

–

Exercisable at January 1, 2023

13

49.80

0.3

–

Vested

–

–

–

–

Exercised

–

–

–

–

Forfeited

(13

)

49.80

–

–

Exercisable at September 30, 2023

–

–

–

–

Summary of Activity Related to PSUs

A summary of the activity related to PSUs for the nine months ended September 30, 2023 is presented below:


	Total		Weighted Average Grant Date Fair Value
Outstanding at January 1, 2023		–	$	–
PSUs granted		2,500		6.20
PSUs forfeited		–		–
PSUs vested		–		–
Outstanding at September 30, 2023		2,500	$	6.20

Schedule of Restricted Stock Units Activity

A summary of the activity related to RSUs for the nine months ended September 30, 2023 is presented below:


	Total			Weighted Average Grant Date Fair Value
Outstanding at January 1, 2023		108,251		$	32.67
RSUs granted		40,412			12.81
RSUs forfeited		(10,340	)		28.02
RSUs vested		(54,636	)		32.26
Outstanding at September 30, 2023		83,687		$	23.92

Summary of Stock-based Compensation Costs Recognized

The following tables summarize total stock-based compensation costs recognized for the three and nine months ended September 30, 2023 and 2022:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Stock options	$	21,564	$	21,564	$	63,989	$	53,207
RSUs		341,443		586,652		1,273,380		1,933,301
PSUs		4,488		67,922		15,089		67,922
ESPP		1,412		22,084		42,419		104,485
Total	$	368,907	$	698,222	$	1,394,877	$	2,158,915

Summary of Stock-based Compensation Reflected within Statements of Operations

The total amount of stock-based compensation was reflected within the statements of operations as:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Research and development	$	138,976	$	273,923	$	557,767	$	922,447
Sales and marketing		84,491		109,702		292,850		344,478
General and administrative		145,440		314,597		544,260		804,328
Severance expense		–		–		–		87,662
Total	$	368,907	$	698,222	$	1,394,877	$	2,158,915

Employee Stock Purchase Plan [Member]

Summary of Fair Values of Stock Options Granted

The fair values of ESPP purchase options granted were estimated using the following assumptions:


	Nine Months Ended September 30,
	2023			2022
Stock price	$4.80-16.72			$19.20-$25.00
Dividend yield		0	%		0	%
Expected volatility	59% - 67%			61% - 68%
Risk-free interest rate	4.42% - 5.47%			0.19% - 2.52%
Expected life	6 months			6 months

Fair Value Measurements - Schedule of Estimated Fair Value of the Warrant Liability (Detail) - Warrants Two Thousand Twenty Three - Level 3 [Member]	Sep. 30, 2023 shares	Jun. 30, 2023 shares	Mar. 31, 2023 shares
Share Price [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants and rights outstanding measurement input	1.6	4.8	10.8
Exercise Price [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants and rights outstanding measurement input	1.66	8	8
Term [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants and rights outstanding measurement input term	5 years 6 months	5 years 8 months 12 days	6 years
Volatility [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants and rights outstanding measurement input	0.75	0.65	0.65
Risk-Free Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants and rights outstanding measurement input	0.046	0.041	0.036
Dividend Yield [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants and rights outstanding measurement input	0	0	0

Warrant Liability

9 Months Ended

Sep. 30, 2023

Warrants and Rights Note Disclosure [Abstract]

Warrant Liability

Note 7 – Warrant Liability

2023 Warrants

In March 2023, the Company issued 412,500 warrants to purchase up to 412,500 shares of its common stock. The 2023 Warrants have a six-year term and were exercisable upon issuance on March 28, 2023. At issuance, each 2023 Warrant was exercisable for one share of the Company’s common stock at a price of $8.00 per share. As of September 30, 2023, the exercise price of the 2023 Warrants was adjusted to $1.66 per share (subject to further adjustment in certain circumstances, including in the event of stock dividends and splits; recapitalizations; change of control transactions; and issuances or sales of, or agreements to issue or sell, shares of common stock or common stock equivalents at a price per share less than the then-applicable exercise price for the 2023 Warrants, including sales under the ATM, the “Exercise Price”).

In the event of certain transactions such as a merger, consolidation, tender offer, reorganization, or other change in control, if holders of common stock are given any choice as to the consideration to be received, the holder of each 2023 Warrant shall be given the same choice of alternate consideration. In the event of certain transactions that are not within the Company’s control, such as a merger, consolidation, tender offer, reorganization, or other change in control of the Company, each holder of a 2023 Warrant shall be entitled to receive the same form of consideration at the Black Scholes value of the unexercised portion of the 2023 Warrant that is being offered and paid to holders of common stock, including the option to exercise the 2023 Warrants on a “cashless basis”.

If the Company issues additional shares of common stock or equity-linked securities for a consideration per share less than the Exercise Price, then such Exercise Price will be reduced to a new lower price pursuant to the terms of the 2023 Warrants. Additionally, if the Exercise Price of any outstanding derivative securities is modified by the Company such that such security’s modified exercise price is below the Exercise Price, the Exercise Price will adjust downward pursuant to the terms of the 2023 Warrant. This provision would not apply for stock or stock equivalents which fall under shares that qualify for exempt issuance, such as if the Company adjusted the option exercise price for an option granted to an employee, officer, or director.

The Company accounted for the 2023 Warrants in accordance with the derivative guidance contained in ASC 815-40, as the warrants did not meet the criteria for equity treatment. The Company believes that the adjustments to the Exercise Price is based on a variable that is not an input to the fair value of a “fixed-for-fixed” option as defined under ASC 815-40, and thus the 2023 Warrants are not eligible for an exception from derivative accounting. As such, the 2023 Warrants were initially measured at fair value and recorded as a liability in the amount of $3,135,000. As of September 30, 2023, all 2023 Warrants were outstanding. As of September 30, 2023, the fair value of the warrant liability was $450,000. The Company recorded a change in fair value of the warrant liability of $788,000 and $2,685,000 for the three and nine months ended September 30, 2023, respectively.

Stockholders' Equity - Additional Information (Detail)						3 Months Ended				9 Months Ended	12 Months Ended
Stockholders' Equity - Additional Information (Detail)	Aug. 30, 2023 USD ($)	Mar. 28, 2023 USD ($) $ / shares shares	Dec. 16, 2021 USD ($)	Oct. 04, 2021 USD ($)	Sep. 24, 2020 USD ($)	Sep. 30, 2023 USD ($) Vote $ / shares shares	Mar. 31, 2023 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2023 USD ($) Vote $ / shares shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($)	Dec. 31, 2020
Class of Stock [Line Items]
Number of common stock voting entitlement per share \| Vote						1				1
Securities reserved for issuance		$ 2,677,191	$ 100,000,000
At-the-market ("ATM") funds receivable								$ 38,832,711	$ 38,832,711
Accounting issuance costs will be paid					$ 1,167,289
Issuance of shares in an at-the-market ("ATM") placement, net of issuance costs						$ 882,852	$ 2,674,697
Common stock, shares issued \| shares		412,500				5,046,994				5,046,994	3,947,267
Class of warrant or right, number of securities called by warrants or rights \| shares		412,500
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares		$ 8.00
Warrants exercisable term										6 years
Common stock outstanding										Our outstanding shares of common stock typically include shares that are deemed delivered under US GAAP. Shares that are deemed delivered currently include shares that have vested, but have not yet been delivered, under tax-deferred equity awards, as well as shares purchased under the ESPP where actual transfer of shares normally occurs a few days after the completion of the purchase periods. There are no voting rights for shares that are deemed delivered under US GAAP until the actual delivery of shares takes place. There are currently 200,000,000 shares of common stock authorized for issuance.
Common stock, shares authorized \| shares						200,000,000				200,000,000	200,000,000
Warrants Issued to Investors [Member]
Class of Stock [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares						$ 1.66				$ 1.66
Maximum [Member]
Class of Stock [Line Items]
Securities reserved for issuance					75,000,000
Sales Agreement [Member]
Class of Stock [Line Items]
Sale of stock, Description													The $40,000,000 of common stock to be offered, issued and sold under the ATM Program was included in the $75,000,000 of securities that could have been offered, issued and sold by the Company under the base prospectus.
Issuance of shares in an at-the-market ("ATM") placement, net of issuance costs						$ 880,866	2,674,697				$ 744,787	$ 27,043,751
Net of issuance costs from offering of shares						94,162	$ 68,637				$ 73,403	$ 868,122
Remaining securities under agreements to Repurchase on shelf registration statement										$ 0
Sales Agreement [Member] \| Maximum [Member]
Class of Stock [Line Items]
Proceeds from (Payments for) in Securities Sold under Agreements				$ 35,000,000	$ 40,000,000
At The Market Program [Member]
Class of Stock [Line Items]
Issuance of shares in an at-the-market ("ATM") placement, net of issuance costs						1,986
Net of issuance costs from offering of shares						$ 56
Remaining securities under agreements to Repurchase on shelf registration statement										$ 24,997,958
At The Market Program [Member] \| Maximum [Member]
Class of Stock [Line Items]
Proceeds from (Payments for) in Securities Sold under Agreements	$ 25,000,000

Stock Based Compensation

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Stock Based Compensation

Note 6 – Stock-Based Compensation

Equity Incentive Plans

2013 Equity Incentive Plan

Effective on June 14, 2023, the Company’s stockholders approved the amendment and restatement of the 2013 Equity Incentive Plan to increase the number of shares reserved for issuance thereunder by 50,000 shares, bringing to 489,298 the total number of shares approved for issuance under that plan.

As of September 30, 2023, 118,565 shares of common stock remain eligible to be issued through equity-based instruments under the 2013 Equity Incentive Plan.

2014 Non-Employee Equity Compensation Plan

Effective on May 26, 2020, the Company’s stockholders approved the amendment and restatement of the 2014 Non-Employee Equity Compensation Plan to increase the number of shares reserved for issuance through equity-based instruments thereunder by 40,000 shares, bringing to 82,500 the total number of shares approved for issuance under that plan.

As of September 30, 2023, 29,137 shares of common stock remain eligible to be issued through equity-based instruments under the 2014 Non-Employee Equity Compensation Plan.

2015 Performance Share Unit Plan

Effective on June 16, 2021, the Company’s stockholders approved the amendment and restatement of the 2015 Performance Share Unit Plan to increase the number of shares reserved for issuance through equity-based instruments thereunder by 85,000 shares, bringing to 255,505 the total number of shares approved for issuance under that plan.

As of September 30, 2023, 106,272 shares of common stock remain eligible to be issued through equity-based instruments under the 2015 Performance Share Unit Plan.

2017 Equity Inducement Plan

On December 28, 2017, the Board approved the 2017 Equity Inducement Plan. Under the 2017 Equity Inducement Plan, the Board reserved 30,000 shares for the grant of RSUs. These grants will be administered by the Board or a committee of the Board. These awards will be granted to individuals who (a) are being hired as an employee by the Company or any subsidiary and such award is a material inducement to such person being hired; (b) are being rehired as an employee following a bona fide period of interruption of employment with the Company or any subsidiary; or (c) will become an employee of the Company or any subsidiary in connection with a merger or acquisition.

On July 20, 2022, the Board increased the number of shares of common stock reserved and available for issuance under the 2017 Equity Inducement Plan by 100,000 shares. As of September 30, 2023, 48,834 shares of common stock remain available to be issued through equity-based instruments under the 2017 Equity Inducement Plan.

Employee Stock Purchase Plan

In April 2015, the Company’s Board approved the ESPP, under which 30,000 shares of common stock have been reserved for purchase by the Company’s employees, subject to the approval by the Company’s stockholders. On May 21, 2015, the Company’s stockholders approved the ESPP. Effective on June 14, 2023, the Company’s stockholders approved the amendment and restatement of the ESPP to increase the number of shares reserved for issuance through equity-based instruments thereunder by 25,000 shares, bringing to 102,500 the total number of shares approved for issuance under that plan. Under the ESPP, employees may designate an amount not less than 1% but not more than 10% of their annual compensation for the purchase of Company shares. An offering period shall be six months in duration commencing on or about January 1 and July 1 of each year. The exercise price of the option will be the lesser of 85% of the fair market of the common stock on the first business day of the offering period and 85% of the fair market value of the common stock on the applicable exercise date.

Note 6 – Stock-Based Compensation, continued

As of September 30, 2023, 18,741 shares of common stock remain eligible to be issued under the ESPP. Employees contributed $3,493 through payroll withholdings to the ESPP as of September 30, 2023 for the current offering period which ends on December 31, 2023 with shares deemed delivered on that date.

Stock Option Activity

In February 2022, the Board granted our Chief Executive Officer 15,000 stock options under the 2013 Equity Incentive Plan at an exercise price of $25.40 per share with half of the options vesting on the second anniversary of the vesting start date and a quarter of the options vesting on each of the two following anniversaries.

The Company estimated the fair value of stock options granted during the second quarter of 2022 using the Black-Scholes option pricing model. No stock options were granted during the nine months ended September 30, 2023. The fair values of stock options granted during the second quarter of 2022 were estimated using the following assumptions:


	Three Months Ended June 30,
	2022
Stock price	$	25.40
Dividend yield		0	%
Expected volatility		108	%
Risk-free interest rate		1.92	%
Expected life	5.6 years

The following is a summary of the Company’s stock option activity during the nine months ended September 30, 2023:

Number of
Options

Weighted
Average
Exercise
Price

Weighted
Average
Remaining
Life In
Years

Intrinsic
Value

Outstanding at January 1, 2023

15,013

25.42

8.9

–

Granted

–

–

–

–

Exercised

–

–

–

–

Forfeited

(13

)

49.80

–

–

Outstanding at September 30, 2023

15,000

25.40

8.2

–

Exercisable at January 1, 2023

13

49.80

0.3

–

Vested

–

–

–

–

Exercised

–

–

–

–

Forfeited

(13

)

49.80

–

–

Exercisable at September 30, 2023

–

–

–

–

As of September 30, 2023, the unamortized fair value of options was $169,700. The unamortized amount will be expensed over a weighted average period of 2.1 years.

PSUs

PSUs are grants that vest upon the achievement of certain performance goals. The goals are commonly related to the Company’s revenue and achievement of sales and marketing goals.

Note 6 – Stock-Based Compensation, continued

On July 20, 2022, the Board granted the Company’s Chief Executive Officer, Cesar Johnston, up to 14,350 PSUs under the Company’s 2015 Performance Share Unit Plan pursuant to the terms of Mr. Johnston’s offer letter with the Company (See Note 4 – Commitments and Contingencies). The up to 14,350 PSUs that have been approved shall vest as follows: (a) up to 9,350 PSU shares shall vest on December 31, 2022, subject to Mr. Johnston’s continued service as Chief Executive Officer and the achievement, to be determined in the Compensation Committee’s sole discretion, by Mr. Johnston of certain performance metrics previously determined by the Compensation Committee and approved by the Board, (b) up to an additional 2,500 PSU shares shall vest on December 31, 2023, subject to Mr. Johnston’s continued service as Chief Executive Officer and the achievement, to be determined in the Compensation Committee’s sole discretion, by Mr. Johnston of certain performance metrics determined and granted by the Board on May 17, 2023, and (c) up to an additional 2,500 PSU shares shall vest on December 31, 2024, subject to Mr. Johnston’s continued service as Chief Executive Officer and the achievement, to be determined in the Compensation Committee’s sole discretion, by Mr. Johnston of certain performance metrics to be recommended by the Compensation Committee and approved by the Board at a subsequent date. On December 31, 2022, 6,779 PSUs were achieved, vested and deemed delivered on that date. As of September 30, 2023, the performance criteria for the additional up to 2,500 PSUs that shall vest on December 31, 2024 had not been approved by the Board.

As of September 30, 2023, the unamortized value of outstanding PSUs was $9,848. The unamortized amount will be expensed over a period of 0.3 years. A summary of the activity related to PSUs for the nine months ended September 30, 2023 is presented below:


	Total		Weighted Average Grant Date Fair Value
Outstanding at January 1, 2023		–	$	–
PSUs granted		2,500		6.20
PSUs forfeited		–		–
PSUs vested		–		–
Outstanding at September 30, 2023		2,500	$	6.20

RSUs

During the nine months ended September 30, 2023, the Compensation Committee granted various employees RSUs covering 3,439 shares of common stock under the 2013 Equity Incentive Plan. The awards vest over five years.

During the nine months ended September 30, 2023, the Compensation Committee granted various non-employees RSUs covering 6,223 shares of common stock under the 2014 Non-Employee Equity Compensation Plan. The awards vest over terms ranging from one to four years.

During the nine months ended September 30, 2023, the Compensation Committee granted various employees RSUs covering 30,750 shares of common stock under the 2017 Equity Inducement Plan. The awards vest over four years.

As of September 30, 2023, the unamortized fair value of the outstanding RSUs was $1,428,206. The unamortized amount will be expensed over a weighted average period of 1.9 years. A summary of the activity related to RSUs for the nine months ended September 30, 2023 is presented below:


	Total			Weighted Average Grant Date Fair Value
Outstanding at January 1, 2023		108,251		$	32.67
RSUs granted		40,412			12.81
RSUs forfeited		(10,340	)		28.02
RSUs vested		(54,636	)		32.26
Outstanding at September 30, 2023		83,687		$	23.92

Note 6 – Stock-Based Compensation, continued

Employee Stock Purchase Plan (“ESPP”)

The current offering period under the ESPP began on July 1, 2023 and will conclude on December 31, 2023. The recently completed offering period under the ESPP started on January 1, 2023 and concluded on June 30, 2023. During the year ended December 31, 2022, there were two offering periods. The first offering period began on January 1, 2022 and concluded on June 30, 2022. The second offering period began on July 1, 2022 and concluded on December 31, 2022.

The weighted-average grant-date fair value of the purchase option for each designated share purchased under the ESPP was approximately $4.05 and $7.29 for the nine months ended September 30, 2023 and 2022, respectively, which represents the fair value of the option, consisting of three main components: (i) the value of the discount on the enrollment date, (ii) the proportionate value of the call option for 85% of the stock and (iii) the proportionate value of the put option for 15% of the stock. The Company recognized compensation expense for the ESPP of $1,412 and $22,084 for the three months ended September 30, 2023 and 2022, respectively. The Company recognized compensation expense for the ESPP of $42,419 and $104,485 for the nine months ended September 30, 2023 and 2022, respectively.

The Company estimated the fair value of ESPP purchase options granted during the nine months ended September 30, 2023 and 2022 using the Black-Scholes option pricing model. The fair values of ESPP purchase options granted were estimated using the following assumptions:


	Nine Months Ended September 30,
	2023			2022
Stock price	$4.80-16.72			$19.20-$25.00
Dividend yield		0	%		0	%
Expected volatility	59% - 67%			61% - 68%
Risk-free interest rate	4.42% - 5.47%			0.19% - 2.52%
Expected life	6 months			6 months

Stock-Based Compensation Expense

The following tables summarize total stock-based compensation costs recognized for the three and nine months ended September 30, 2023 and 2022:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Stock options	$	21,564	$	21,564	$	63,989	$	53,207
RSUs		341,443		586,652		1,273,380		1,933,301
PSUs		4,488		67,922		15,089		67,922
ESPP		1,412		22,084		42,419		104,485
Total	$	368,907	$	698,222	$	1,394,877	$	2,158,915

The total amount of stock-based compensation was reflected within the statements of operations as:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
Research and development	$	138,976	$	273,923	$	557,767	$	922,447
Sales and marketing		84,491		109,702		292,850		344,478
General and administrative		145,440		314,597		544,260		804,328
Severance expense		–		–		–		87,662
Total	$	368,907	$	698,222	$	1,394,877	$	2,158,915

Condensed Statements of Cash Flows - USD ($)	9 Months Ended
Condensed Statements of Cash Flows - USD ($)	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net loss	$ (14,762,267)	$ (20,135,342)
Adjustments to reconcile net loss to Net cash used in operating activities:
Depreciation and amortization	137,772	200,995
Stock based compensation	1,394,877	2,158,915
Changes in operating lease right-of-use assets	547,939	550,372
Inventory net realizable value adjustment	166,086
Bad debt expense	(12,500)	30,000
Change in fair value of warrant liability	(2,685,000)
Offering costs allocated to warrants	591,670
Changes in operating assets and liabilities:
Accounts receivable	35,655	10,282
Inventory	(259,881)	(164,426)
Prepaid expenses and other current assets	(68,702)	(230,368)
Accounts payable	(131,824)	(312,174)
Accrued expenses	(117,478)	924
Accrued severance expense	(213,570)	(395,405)
Operating lease liabilities	(533,685)	(594,703)
Deferred revenue	(5,386)	42,477
Net cash used in operating activities	(15,916,294)	(18,838,453)
Cash flows from investing activities:
Purchases of property and equipment	(97,242)	(127,198)
Net cash used in investing activities	(97,242)	(127,198)
Cash flows from financing activities:
Net proceeds from an ATM offering	3,557,549
Net proceeds from a sale of common stock and warrant issuance	2,677,191
Proceeds from contributions to employee stock purchase plan	70,162	249,705
Net cash provided by financing activities	6,304,902	249,705
Net decrease in cash and cash equivalents	(9,708,634)	(18,715,946)
Cash and cash equivalents – beginning	26,287,293	49,071,414
Cash and cash equivalents – ending	16,578,659	30,355,468
Supplemental disclosure of non-cash investing and financing activities:
Increase in operating lease right-of-use assets and operating lease liabilities		2,071,336
Restricted Stock Units (RSUs) [Member]
Supplemental disclosure of non-cash investing and financing activities:
Common stock issued	$ 9	$ 9

Customer Concentrations

9 Months Ended

Sep. 30, 2023

Risks and Uncertainties [Abstract]

Customer Concentrations

Note 10 – Customer Concentrations

Three customers accounted for approximately 75% of the Company’s revenue for the three months ended September 30, 2023, and two customers accounted for approximately 87% of the Company’s revenue for the three months ended September 30, 2022. Three customers accounted for approximately 67% of the Company's revenue for the nine months ended September 30, 2023, and one customer accounted for approximately 46% of the Company's revenue for the nine months ended September 30, 2022. Three customers accounted for approximately 93% of the Company’s accounts receivable balance as of September 30, 2023. One customer accounted for approximately 87% of the Company’s accounts receivable balance as of December 31, 2022.

Commitments and Contingencies - Executive Employee Agreement - Cesar Johnston - Additional Information (Detail)					9 Months Ended		12 Months Ended
	Dec. 31, 2024 shares	Dec. 31, 2023 shares	Jul. 20, 2022 shares	Dec. 09, 2021 USD ($) Installment shares	Sep. 30, 2023 shares	Sep. 30, 2022 shares	Dec. 31, 2024 shares	Dec. 31, 2023 shares	Dec. 31, 2022 shares
Performance Share Units [Member]
Commitments And Contingencies [Line Items]
Shares granted					2,500
Shares vested					0				6,779
Mr. Johnston [Member]
Commitments And Contingencies [Line Items]
Salary \| $				$ 400,000
Annual bonus, percentage				100.00%
One time sign on bonus amount \| $				$ 120,000
Bonus payable, number of installments \| Installment				2
Bonus payable installment amount \| $				$ 60,000
Debt description					a grant of 7,500 RSUs to acquire shares of the Company’s common stock, one third of which vested on December 6, 2022 and the remaining two thirds of which vest in eight equal installments of 625 each on each quarterly anniversary thereafter
Options granted				15,000
Target bonus percentage				100.00%
Mr. Johnston [Member] \| Johnston A&R CIC Agreement [Member]
Commitments And Contingencies [Line Items]
Target bonus percentage				150.00%
Mr. Johnston [Member] \| Performance Share Units [Member]
Commitments And Contingencies [Line Items]
Additional equity award				14,350
Vesting percentage				33.30%
Vesting period				3 years
Additional equity award per year.				1,250
Shares granted			14,350			14,350			14,350
Shares vested						14,350
Mr. Johnston [Member] \| Performance Share Units [Member] \| Maximum [Member]
Commitments And Contingencies [Line Items]
Shares vested									9,350
Mr. Johnston [Member] \| Performance Share Units [Member] \| Maximum [Member] \| Forecast
Commitments And Contingencies [Line Items]
Shares vested	2,500	2,500					2,500	2,500
Shares not yet granted	2,500

Commitments and Contingencies

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 4 – Commitments and Contingencies

Operating Leases

San Jose Lease

On May 20, 2022, the Company signed a lease amendment to the existing lease for its office space at its corporate headquarters in San Jose, California, extending the term of the lease for an additional three years. Upon signing the lease amendment, the Company recorded a new ROU lease asset of $2,071,336 and operating lease liability of $2,071,336, using a present value discount rate of 3.0%. Upon expiration of the original lease on September 30, 2022, the new monthly lease payment starting October 1, 2022 is $58,903, subject to annual escalations up to a maximum monthly lease payment of $62,490.

Note 4 – Commitments and Contingencies, continued

Costa Mesa Lease

On September 22, 2021, the Company signed a new lease for office space for its engineers based in Costa Mesa, California. Per the lease, the lease commencement date was October 1, 2021 and the expiration date was September 30, 2023. The Company did not have control of the new office space until October 2021, at which time the Company recorded a new ROU lease asset of $104,563 and operating lease liability of $104,563. The new Costa Mesa lease had an initial monthly lease payment of $4,369 starting October 1, 2021 and was subject to an annual escalation up to a maximum monthly lease payment of $4,522. The lease expired on September 30, 2023 and was not renewed.

Operating Lease Commitments

The Company follows ASC 842, Leases, (“Topic 842”) and recognizes the required ROU assets and operating lease liabilities on its balance sheet. The Company anticipates having future total lease payments of $1,477,914 during the period from the fourth quarter of 2023 to the third quarter of 2025. As of September 30, 2023, the Company has total operating lease ROU assets of $1,411,930, current portion of operating lease liabilities of $696,573 and long-term portion of operating lease liabilities of $739,767. The weighted average remaining lease term is 2.0 years as of September 30, 2023.

A reconciliation of undiscounted cash flows to lease liabilities recognized as of September 30, 2023 is as follows:


	Amount
	(unaudited)
2023		182,009
2024		733,497
2025		562,408
Total future lease payments		1,477,914
Present value discount (3.0% weighted average)		(41,574	)
Total operating lease liabilities	$	1,436,340

Hosted Design Software Agreement

In June 2021, the Company entered into an electronic design automation software in a hosted environment license agreement with a term of three-years under which the Company is required to remit quarterly payments of approximately $233,000 through the second quarter of 2024.

Litigations, Claims, and Assessments

The Company is from time to time involved in various disputes, claims, liens and litigation matters arising in the normal course of business. While the outcome of these disputes, claims, liens and litigation matters cannot be predicted with certainty, after consulting with legal counsel, management does not believe that the outcome of these matters will have a material adverse effect on the Company's combined financial position, results of operations or cash flows.

MBO Bonus Plan

On March 15, 2018, the Company’s Board of Directors (“Board”), on the recommendation of the Board’s Compensation Committee (“Compensation Committee”), approved the Energous Corporation MBO Bonus Plan (“Bonus Plan”) for executive officers of the Company. To be eligible to receive a bonus under the Bonus Plan, an executive officer must be continuously employed throughout the applicable performance period, and in good standing, and achieve the performance objectives selected by the Compensation Committee.

Under the Bonus Plan, the Compensation Committee is responsible for selecting the amounts of potential bonuses for executive officers, the performance metrics used to determine whether any such bonuses will be paid and determining whether those performance metrics have been achieved.

During the three and nine months ended September 30, 2023, the Company recorded $146,758 and $445,394 in expense, respectively, under the Bonus Plan. As of September 30, 2023, the Company had an unpaid total of $187,798 under the Bonus Plan which is expected to be paid during the first quarter of 2024.

Note 4 – Commitments and Contingencies, continued

Severance and Change in Control Agreement

On March 15, 2018, the Compensation Committee approved a form of Severance and Change in Control Agreement (“Severance Agreement”) that the Company may enter into with executive officers (each, an “Executive”).

Under the Severance Agreement, if an Executive is terminated in a qualifying change in control termination, the Company agrees to pay the Executive six to 12 months of that Executive’s monthly base salary. If an Executive elects continued coverage under the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”) the Company agrees to pay the full amount of the Executive’s premiums under the Company’s health, dental and vision plans, including coverage for the Executive’s eligible dependents, for the six to 12 month period following the Executive’s termination.

Executive Employee Agreement – Cesar Johnston

On December 9, 2021, the Company announced that Cesar Johnston had been appointed as the Company’s Chief Executive Officer. In connection with Mr. Johnston’s appointment as Chief Executive Officer, the Company and Mr. Johnston executed an offer letter dated as of December 6, 2021.

Under the terms of his offer letter, Mr. Johnston will receive an annual base salary of $400,000 per year. Beginning in 2022, he is eligible to receive a discretionary annual bonus of up to 100% of his base salary, at the recommendation of the Compensation Committee, with the approval of the Board. In addition, as an inducement to accept his appointment as Chief Executive Officer, Mr. Johnston received, subject to continued employment, (a) a special one-time sign-on bonus in the amount of $120,000, payable in two equal installments of $60,000 each on the first payroll date in 2022 and the first payroll date after December 6, 2022, (b) a grant of 7,500 RSUs to acquire shares of the Company’s common stock, one third of which vested on December 6, 2022 and the remaining two thirds of which vest in eight equal installments of 625 each on each quarterly anniversary thereafter and (c) a grant of an option to purchase 15,000 shares of the Company’s common stock at an exercise price equal to the fair market value of the Company’s common stock on the grant date, half of which shall vest on December 31, 2023, a quarter of which shall vest on December 31, 2024 and the remainder of which shall vest on December 31, 2025.

Also pursuant to the terms of his offer letter, Mr. Johnston is eligible for (a) an additional equity award in the amount of 14,350 PSUs to acquire shares of the Company’s common stock, to vest at various amounts to be agreed upon each year by the Board over a three year period commencing January 1, 2022 and ending December 31, 2024, upon the achievement of performance criteria to be mutually established by Mr. Johnston and the Compensation Committee, and (b) an additional equity award of up to 1,250 PSUs per calendar year for each of 2022, 2023 and 2024, based on outperformance of agreed upon goals per calendar year, as determined by the Compensation Committee with approval of the Board. On July 20, 2022, the Board approved, by unanimous written consent, the grant to Mr. Johnston of up to 14,350 PSUs pursuant to the terms of Mr. Johnston’s offer letter. The 14,350 PSUs that have been approved shall vest as follows: (a) up to 9,350 PSU shares shall vest on December 31, 2022, subject to Mr. Johnston’s continued service as Chief Executive Officer and the achievement, to be determined in the Compensation Committee’s sole discretion, by Mr. Johnston of certain performance metrics previously determined by the Compensation Committee and approved by the Board, (b) up to an additional 2,500 PSU shares shall vest on December 31, 2023, subject to Mr. Johnston’s continued service as Chief Executive Officer and the achievement, to be determined in the Compensation Committee’s sole discretion, by Mr. Johnston of certain performance metrics determined by the Board on May 17, 2023, and (c) up to an additional 2,500 PSU shares shall vest on December 31, 2024, subject to Mr. Johnston’s continued service as Chief Executive Officer and the achievement, to be determined and granted in the Compensation Committee’s sole discretion, by Mr. Johnston of certain performance metrics to be recommended by the Compensation Committee and approved by the Board at a subsequent date. As of September 30, 2023, the Board had not yet approved the performance criteria applicable to the up to 2,500 PSU shares that will vest on December 31, 2024; therefore, these 2,500 PSUs have not been considered granted.

In connection with Mr. Johnston’s appointment as Chief Executive Officer, the Company and Mr. Johnston additionally entered into an amended and restated severance and change in control agreement, dated as of December 6, 2021. In the event of a termination that is not a change-in-control qualifying termination, Mr. Johnston is entitled to (a) a one-time lump sum payment by the Company in an amount equal to 18 months of his monthly base salary plus an amount equal to 100% of his target bonus plus, if agreed by the Compensation Committee, a discretionary bonus for the year in which the termination occurs, (b) any outstanding unvested equity awards held by Mr. Johnston that would vest in the next 18 months of continuing employment (other than any equity awards that vest upon satisfaction of performance criteria) will accelerate and become vested and (c) if Mr. Johnston timely elects continued coverage under COBRA, the Company or its successor will pay the full amount of Mr. Johnston’s COBRA premiums on his behalf for 18 months.

Note 4 – Commitments and Contingencies, continued

Mr. Johnston’s agreement additionally provides that, in the event of a change-in-control qualifying termination, Mr. Johnston is entitled to (a) a one-time lump sum payment by the Company in an amount equal to 18 months of his monthly base salary plus an amount equal to 150% of his target bonus plus a prorated bonus for the year in which the termination occurs, (b) any outstanding unvested equity awards held by Mr. Johnston (including any equity awards that vest upon satisfaction of performance criteria) will accelerate in full and become vested and (c) if Mr. Johnston timely elects continued coverage under COBRA, the Company or its successor will pay the full amount of Mr. Johnston’s COBRA premiums on his behalf for 18 months.

Mr. Johnston is also eligible to receive all customary and usual benefits generally available to senior executives of the Company.

Executive Transition Agreement – Stephen Rizzone

On April 3, 2015, the Company entered into an Amended and Restated Executive Employment Agreement with Stephen R. Rizzone, the Company’s former President and Chief Executive Officer (“Employment Agreement”).

The Employment Agreement, effective as of January 1, 2015, had an initial term of four years and automatically renewed each year after the initial term. The Employment Agreement provided for an annual base salary of $365,000, and Mr. Rizzone was eligible to receive quarterly cash bonuses from the MBO Bonus Plan with a total target amount equal to 100% of his base salary based upon achievement of performance-based objectives established by the Board.

On July 9, 2021, the Company announced that Stephen R. Rizzone had retired from his position as the Company’s President and Chief Executive Officer and as a member of the Board.

In connection with Mr. Rizzone’s retirement, the Company and Mr. Rizzone entered into an Executive Transition Agreement (the “Separation Agreement”), providing for continued employment through August 31, 2021. Upon his termination of employment, the Separation Agreement provides severance payments and benefits to Mr. Rizzone consistent with the terms of his existing employment agreement with the Company, including without limitation: compensation-based payments of $1,460,000 in the aggregate, payable under a certain payment scheme as set forth therein, an additional lump sum cash payment of $2,000,000, a pro-rated bonus payment for the two months of employment during the then current quarterly bonus period payable at the same time bonus payments were made to other executives of the Company, settlement of deferred vested RSUs and an extension of the exercise periods of all stock options held by Mr. Rizzone until the one year anniversary of his termination date, and additional benefits related to Mr. Rizzone’s medical insurance. In addition, the Company agreed to pay-off all amounts owed under a lease agreement relating to a company car and that Mr. Rizzone would receive the title to the vehicle. All compensation under the Separation Agreement has been or will be subject to applicable withholding.

As of September 30, 2023, the Company had no accrued expense pertaining to Mr. Rizzone's Separation Agreement.

Executive Transition Agreement – Neeraj Sahejpal

On April 29, 2022, the Company announced the departure of Neeraj Sahejpal, former Senior Vice President of Marketing and Business Development, effective April 30, 2022. Pursuant to the terms of Mr. Sahejpal’s severance and change of control agreement with the Company, Mr. Sahejpal received payments and benefits including compensation equal to twelve months of Mr. Sahejpal’s then-current salary of $261,250, twelve months of maximum potential bonus of $261,250, and twelve months of COBRA reimbursements. In addition, all RSUs held by Mr. Sahejpal that were due to vest in the twelve months after his departure, totaling RSUs covering 4,297 shares, were accelerated.

As of September 30, 2023, the Company had no unpaid accrued severance expense pertaining to Mr. Sahejpal’s agreement.

Note 4 – Commitments and Contingencies, continued

Executive Transition Agreement – William Mannina

On July 20, 2023, the Company announced the departure of William Mannina, former Acting Chief Financial Officer, effective August 16, 2023. Pursuant to the terms of a letter agreement between Mr. Mannina and the Company, Mr. Mannina will receive payments and benefits including cash severance payments equivalent to nine months of his then-current salary of $265,825 and premium payments for continued healthcare coverage for nine months following his resignation effective date. Mr. Mannina’s restricted stock units continued to vest through August 16, 2023.

As of September 30, 2023, the Company had accrued unpaid severance expense of $196,941 pertaining to Mr. Mannina's agreement.

Strategic Alliance Agreement

In November 2016, the Company and Dialog Semiconductor plc (“Dialog”), a related party (see Note 9—Related Party Transactions), entered into a Strategic Alliance Agreement (“Alliance Agreement”) for the manufacture, distribution and commercialization of products incorporating the Company’s wire-free charging technology (“Licensed Products”). Pursuant to the terms of the Alliance Agreement, the Company agreed to engage Dialog as the exclusive supplier of the Licensed Products for specified fields of use, subject to certain exceptions (the “Company Exclusivity Requirement”). Dialog agreed to not distribute, sell or work with any third party to develop any competing products without the Company’s approval. In addition, both parties agreed on a revenue sharing arrangement and will collaborate on the commercialization of Licensed Products based on a mutually-agreed upon plan. Each party will retain all of its intellectual property.

The Alliance Agreement has an initial term of seven years, with automatic renewal annually thereafter unless terminated by either party upon 180 days’ prior written notice. The Company may terminate the Alliance Agreement at any time after the third anniversary of the Alliance Agreement upon 180 days’ prior written notice to Dialog, or if Dialog breaches certain exclusivity obligations. Dialog may terminate the Alliance Agreement if sales of Licensed Products do not meet specified targets. The Company Exclusivity Requirement had a termination date of the earlier of January 1, 2021 or the occurrence of certain events relating to the Company’s pre-existing exclusivity obligations. The Company Exclusivity Requirement renewed automatically on an annual basis unless the Company and Dialog agree to terminate the requirement.

On September 20, 2021, the Company was notified by Dialog, then recently acquired by Renesas Electronics Corporation, that it was terminating the Alliance Agreement between the Company and Dialog. There is a wind down period included in the Alliance Agreement which will conclude in September 2024. During the wind down period, the Alliance Agreement’s terms will continue to apply to the Company’s products that are covered by certain existing customer relationships, except that the parties’ respective exclusivity rights have terminated (see Note 9 – Related Party Transactions for expenses incurred by the Company from Renesas Electronics Corporation).

Condensed Statement of Changes in Stockholders' Equity (Parenthetical) - USD ($)	3 Months Ended
	Sep. 30, 2023	Mar. 31, 2023
At The Market [Member]
Issuance costs	$ 94,218	$ 68,637
Sale of Common Stock [Member]
Issuance costs		$ 3,166,139

Business Organization, Nature of Operations - Additional Information (Detail)			3 Months Ended	9 Months Ended
	Aug. 15, 2023	Jun. 14, 2023	Sep. 30, 2023	Sep. 30, 2023
Reverse stock split, description				1-for-20
Reverse stock split, conversion ratio	20		20	20
Maximum [Member]
Reverse stock split, conversion ratio		20

Stock Based Compensation - Employee Stock Purchase Plan - Additional Information (Detail) - Employee Stock Purchase Plan [Member] - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value			$ 4.05	$ 7.29
Percentage of proportionate value of call option of stock			85.00%
Percentage of proportionate value of put option of stock			15.00%
Compensation-based payments	$ 1,412	$ 22,084	$ 42,419	$ 104,485

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 35
-Paragraph 1D
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+ Details

Business Organization, Nature of Operations

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Business Organization, Nature of Operations

Note 1 - Business Organization, Nature of Operations

Description of Business

Energous Corporation (the “Company”) was incorporated in Delaware on October 30, 2012. The Company has developed its WattUp® wireless power technology, consisting of proprietary semiconductor chipsets, software controls, hardware designs and antennas, that enables radio frequency (“RF”) based charging for electronic devices. The WattUp technology has a broad spectrum of capabilities, including near-field wireless charging and at-a-distance wireless charging at various distances. The Company believes its proprietary WattUp technology is well suited for many applications, including building and home automation, electronic shelf labels, industrial IoT sensors, surface and implanted medical devices, tracking devices, hearables, wearables, consumer electronics and public safety applications. Potential future applications include smartphones, commercial and industrial robotics, as well as automotive solutions and other devices with charging requirements that would otherwise require battery replacement or a wired power connection.

Reverse Stock Split

On June 14, 2023, at the Company's 2023 annual meeting of stockholders, the Company's stockholders approved a proposal to effect a reverse stock split of the Company's common stock by a ratio not to exceed 1-for-20.

On August 15, 2023, the Company announced that its Board of Directors had determined to set the reverse stock split ratio at 1-for-20 and that the Company's common stock would begin trading at the split-adjusted price beginning August 16, 2023. Upon effectiveness of the reverse stock split, every twenty shares of issued and outstanding common stock held were converted into one share of common stock. No fractional shares were distributed as a result of the reverse stock split and stockholders were entitled to a cash payment in lieu of fractional shares. Additionally, the par value of the Company's common stock did not change.

All information presented herein, unless otherwise indicated herein, reflects the 1-for-20 reverse stock split of the Company’s outstanding shares of common stock, and unless otherwise indicated, all such amounts and corresponding conversion price or exercise price data set forth herein have been adjusted to give effect to such reverse stock split.

Commitments and Contingencies - Strategic Alliance Agreement - Additional Information (Detail)		1 Months Ended
	Jun. 25, 2015	Nov. 30, 2016
Commitments And Contingencies [Line Items]
Initial term of agreement	3 years
Strategic Alliance Agreement [Member]
Commitments And Contingencies [Line Items]
Initial term of agreement		7 years

Stock Based Compensation - Summary of Fair Values of Stock Options Granted (Detail) - Employee Stock Option [Member] - $ / shares	3 Months Ended	9 Months Ended
	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock price	$ 25.4
Dividend yield	0.00%
Expected volatility	108.00%
Risk-free interest rate	1.92%
Expected life	5 years 7 months 6 days
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield		0.00%	0.00%
Expected life		6 months	6 months
Minimum [Member] \| Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock price		$ 4.8	$ 19.2
Expected volatility		59.00%	61.00%
Risk-free interest rate		4.42%	0.19%
Maximum [Member] \| Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock price		$ 16.72	$ 25
Expected volatility		67.00%	68.00%
Risk-free interest rate		5.47%	2.52%

Related Party Transactions

9 Months Ended

Sep. 30, 2023

Related Party Transactions

Note 9 – Related Party Transactions

In November 2016, the Company and Dialog entered into the Alliance Agreement for the manufacture, distribution and commercialization of products incorporating the Company’s wire-free charging technology (See Note 4 – Commitments and Contingencies, Strategic Alliance Agreement). On November 7, 2016 and June 28, 2017, the Company and Dialog entered into securities purchase agreements under which Dialog acquired a total of 86,985 shares and received warrants to purchase up to 70,878 shares. As of September 30, 2023, none of the warrants remain outstanding. As of September 30, 2023, Dialog owns approximately 1.7% of the Company’s outstanding common shares. The Company did not record any revenue under the Alliance Agreement during the three or nine months ended September 30, 2023 and 2022. The Company incurred $0 and $124,055 in chip test development expense from Renesas Electronics Corporation, which acquired Dialog in August 2021 (“Renesas”), during the three and nine months ended September 30, 2023, respectively. The Company did not incur any expense from Renesas during the three and nine months ended September 30, 2022.

On September 20, 2021, the Company was notified by Dialog that it was terminating the Alliance Agreement between the Company and Dialog.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-6

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481062/946-235-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481062/946-235-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(g)(3))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(e))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//850/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-6

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-1

+ Details

Fair Value Measurements - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Fair value adjustment of warrants	$ 788,000	$ 2,685,000

Stock Based Compensation - Schedule of Restricted Stock Units Activity (Detail) - Restricted Stock Units (RSUs) [Member]	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Outstanding \| shares	108,251
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period \| shares	40,412
Shares Forfeited \| shares	(10,340)
Share based compensation arrangement by share based payment award equity instruments other than options vested in period \| shares	(54,636)
Number of Options, Outstanding \| shares	83,687
Weighted Average Grant Date Fair Value, Beginning Balance \| $ / shares	$ 32.67
Weighted Average Grant Date Fair Value, Shares Granted \| $ / shares	12.81
Weighted Average Grant Date Fair Value, Shares Forfeited \| $ / shares	28.02
Weighted Average Grant Date Fair Value, Shares Vested \| $ / shares	32.26
Weighted Average Grant Date Fair Value, Ending Balance \| $ / shares	$ 23.92

Commitments and Contingencies - Operating Leases - Additional Information (Detail) - USD ($)		1 Months Ended
	Oct. 01, 2021	Oct. 31, 2022	Sep. 30, 2023	Dec. 31, 2022	May 20, 2022	Oct. 31, 2021
Commitments And Contingencies [Line Items]
ROU lease assets			$ 1,411,930	$ 1,959,869
Operating lease liability			696,573	705,894
Total operating lease payments			1,477,914
Long-term portion of operating lease liabilities			739,767	$ 1,264,131
Accounting Standards Update 2016-02
Commitments And Contingencies [Line Items]
ROU lease assets			1,411,930
Operating lease liability			696,573
Total operating lease payments			1,477,914
Long-term portion of operating lease liabilities			$ 739,767
Weighted average remaining lease term			2 years
San Jose, California [Member]
Commitments And Contingencies [Line Items]
Operating lease, renewal term					3 years
ROU lease assets					$ 2,071,336
Operating lease liability					$ 2,071,336
Operating lease present value discount rate					3.00%
Operating lease payment		$ 58,903
San Jose, California [Member] \| Maximum [Member]
Commitments And Contingencies [Line Items]
Maximum monthly lease payment		$ 62,490
Costa Mesa California
Commitments And Contingencies [Line Items]
ROU lease assets						$ 104,563
Operating lease liability						$ 104,563
Operating lease payment	$ 4,369
Costa Mesa California \| Maximum [Member]
Commitments And Contingencies [Line Items]
Maximum monthly lease payment	$ 4,522

Condensed Statement of Changes in Stockholders' Equity - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Beginning balance at Dec. 31, 2021	$ 46,984,278	$ 767	$ 383,383,550	$ (336,400,039)
Beginning balance (in shares) at Dec. 31, 2021		3,833,360
Stock-based compensation - options	10,313		10,313
Stock-based compensation - restricted stock units ("RSUs")	745,620		745,620
Stock-based compensation - employee stock purchase plan ("ESPP")	40,973		40,973
Issuance of shares for RSUs		$ 4	(4)
Issuance of shares for RSUs (in shares)		19,396
Proceeds from contributions to the ESPP	104,217		104,217
Net loss	(7,152,718)			(7,152,718)
Ending balance at Mar. 31, 2022	40,732,683	$ 771	384,284,669	(343,552,757)
Ending balance (in shares) at Mar. 31, 2022		3,852,756
Beginning balance at Dec. 31, 2021	46,984,278	$ 767	383,383,550	(336,400,039)
Beginning balance (in shares) at Dec. 31, 2021		3,833,360
Net loss	(20,135,342)
Ending balance at Sep. 30, 2022	29,257,556	$ 778	385,792,159	(356,535,381)
Ending balance (in shares) at Sep. 30, 2022		3,886,132
Beginning balance at Dec. 31, 2021	46,984,278	$ 767	383,383,550	(336,400,039)
Beginning balance (in shares) at Dec. 31, 2021		3,833,360
Ending balance at Dec. 31, 2022	24,645,475	$ 789	387,319,985	(362,675,299)
Ending balance (in shares) at Dec. 31, 2022		3,947,267
Beginning balance at Mar. 31, 2022	40,732,683	$ 771	384,284,669	(343,552,757)
Beginning balance (in shares) at Mar. 31, 2022		3,852,756
Stock-based compensation - options	21,330		21,330
Stock-based compensation - restricted stock units ("RSUs")	601,029		601,029
Stock-based compensation - employee stock purchase plan ("ESPP")	41,428		41,428
Issuance of shares for RSUs		$ 2	(2)
Issuance of shares for RSUs (in shares)		10,791
Proceeds from contributions to the ESPP	60,511	$ 2	60,509
Proceeds from contributions to the ESPP (in shares)		9,690
Net loss	(7,017,749)			(7,017,749)
Ending balance at Jun. 30, 2022	34,439,232	$ 775	385,008,963	(350,570,506)
Ending balance (in shares) at Jun. 30, 2022		3,873,237
Stock-based compensation - options	21,564		21,564
Stock-based compensation - restricted stock units ("RSUs")	586,652		586,652
Stock-based compensation - performance share units ("PSUs")	67,922		67,922
Stock-based compensation - employee stock purchase plan ("ESPP")	22,084		22,084
Issuance of shares for RSUs		$ 3	(3)
Issuance of shares for RSUs (in shares)		12,895
Proceeds from contributions to the ESPP	84,977		84,977
Net loss	(5,964,875)			(5,964,875)
Ending balance at Sep. 30, 2022	29,257,556	$ 778	385,792,159	(356,535,381)
Ending balance (in shares) at Sep. 30, 2022		3,886,132
Beginning balance at Dec. 31, 2022	24,645,475	$ 789	387,319,985	(362,675,299)
Beginning balance (in shares) at Dec. 31, 2022		3,947,267
Stock-based compensation - options	21,095		21,095
Stock-based compensation - restricted stock units ("RSUs")	476,242		476,242
Stock-based compensation - employee stock purchase plan ("ESPP")	24,740		24,740
Issuance of shares for RSUs		$ 2	(2)
Issuance of shares for RSUs (in shares)		9,347
Proceeds from contributions to the ESPP	65,134		65,134
Issuance of shares in an at-the-market ("ATM") placement, net of issuance costs	2,674,697	$ 37	2,674,660
Issuance of shares in an at-the-market ("ATM") placement, net of issuance costs (in shares)		182,511
Issuance of shares in a sale of common stock, net of $3,166,139 in issuance costs and fair value of a liability warrant	133,861	$ 83	133,778
Issuance of shares in a sale of common stock, net of issuance costs and fair value of liability warrant(in shares)		412,500
Net loss	(6,652,507)			(6,652,507)
Ending balance at Mar. 31, 2023	21,388,737	$ 911	390,715,632	(369,327,806)
Ending balance (in shares) at Mar. 31, 2023		4,551,625
Beginning balance at Dec. 31, 2022	24,645,475	$ 789	387,319,985	(362,675,299)
Beginning balance (in shares) at Dec. 31, 2022		3,947,267
Net loss	(14,762,267)
Ending balance at Sep. 30, 2023	15,039,657	$ 925	392,476,298	(377,437,566)
Ending balance (in shares) at Sep. 30, 2023		5,046,994
Beginning balance at Mar. 31, 2023	21,388,737	$ 911	390,715,632	(369,327,806)
Beginning balance (in shares) at Mar. 31, 2023		4,551,625
Stock-based compensation - options	21,330		21,330
Stock-based compensation - restricted stock units ("RSUs")	455,695		455,695
Stock-based compensation - performance share units ("PSUs")	10,601		10,601
Stock-based compensation - employee stock purchase plan ("ESPP")	16,267		16,267
Issuance of shares for RSUs		$ 7	(7)
Issuance of shares for RSUs (in shares)		34,075
Proceeds from contributions to the ESPP	1,535	$ 3	1,532
Proceeds from contributions to the ESPP (in shares)		16,341
Net loss	(3,995,166)			(3,995,166)
Ending balance at Jun. 30, 2023	17,898,999	$ 921	391,221,050	(373,322,972)
Ending balance (in shares) at Jun. 30, 2023		4,602,041
Stock-based compensation - options	21,564		21,564
Stock-based compensation - restricted stock units ("RSUs")	341,443		341,443
Stock-based compensation - performance share units ("PSUs")	4,488		4,488
Stock-based compensation - employee stock purchase plan ("ESPP")	1,412		1,412
Issuance of shares for RSUs (in shares)		11,249
Proceeds from contributions to the ESPP	3,493		3,493
Cash in lieu of fractional shares from reverse stock split (in shares)		(1,857)
Issuance of shares in an at-the-market ("ATM") placement, net of issuance costs	882,852	$ 4	882,848
Issuance of shares in an at-the-market ("ATM") placement, net of issuance costs (in shares)		435,561
Net loss	(4,114,594)			(4,114,594)
Ending balance at Sep. 30, 2023	$ 15,039,657	$ 925	$ 392,476,298	$ (377,437,566)
Ending balance (in shares) at Sep. 30, 2023		5,046,994

Stock Based Compensation - Summary of Stock-based Compensation Reflected within Statements of Operations (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total	$ 368,907	$ 698,222	$ 1,394,877	$ 2,158,915
Research and Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Compensation-based payments	138,976	273,923	557,767	922,447
Selling and Marketing Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Compensation-based payments	84,491	109,702	292,850	344,478
General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Compensation-based payments	$ 145,440	$ 314,597	$ 544,260	804,328
Severance Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Compensation-based payments				$ 87,662

Condensed Balance Sheets - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 16,578,659	$ 26,287,293
Accounts receivable, net	120,198	143,353
Inventory	199,616	105,821
Prepaid expenses and other current assets	896,253	827,551
Total current assets	17,794,726	27,364,018
Property and equipment, net	388,505	429,035
Operating lease right-of-use assets	1,411,930	1,959,869
Total assets	19,595,161	29,752,922
Current liabilities:
Accounts payable	768,941	900,765
Accrued expenses	1,672,936	1,790,414
Accrued severance expense	202,946	416,516
Warrant liability	450,000
Operating lease liabilities, current portion	696,573	705,894
Deferred revenue	24,341	29,727
Total current liabilities	3,815,737	3,843,316
Operating lease liabilities, long-term portion	739,767	1,264,131
Total liabilities	4,555,504	5,107,447
Commitments and contingencies
Stockholders’ equity:
Preferred Stock, $0.00001 par value, 10,000,000 shares authorized at September 30, 2023 and December 31, 2022; no shares issued or outstanding at September 30, 2023 and December 31, 2022.
Common Stock, $0.00001 par value, 200,000,000 shares authorized at September 30, 2023 and December 31, 2022; 5,046,994 and 3,947,267 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively.	925	789
Additional paid-in capital	392,476,298	387,319,985
Accumulated deficit	(377,437,566)	(362,675,299)
Total stockholders’ equity	15,039,657	24,645,475
Total liabilities and stockholders’ equity	$ 19,595,161	$ 29,752,922

Commitments and Contingencies - Employee Agreement - Neeraj Sahejpal - Additional Information (Detail) - USD ($)	Apr. 29, 2022	Sep. 30, 2023	Dec. 31, 2022
Commitments And Contingencies [Line Items]
Accrued severance expense		$ 202,946	$ 416,516
Mr. Neeraj Sahejpal [Member]
Commitments And Contingencies [Line Items]
Salary	$ 261,250
Potential bonus	$ 261,250
Accrued severance expense		$ 0
Mr. Neeraj Sahejpal [Member] \| Restricted Stock Units (RSUs) [Member]
Commitments And Contingencies [Line Items]
Shares vested	4,297

Related Party Transactions - Additional Information (Detail) - USD ($)	3 Months Ended		8 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 28, 2017	Sep. 30, 2023	Sep. 30, 2022	Mar. 28, 2023
Related Party Transaction [Line Items]
Class of warrant or right, number of securities called by warrants or rights						412,500
Cost of revenue	$ 48,394	$ 420,060		$ 270,025	$ 894,693
Dialog [Member]
Related Party Transaction [Line Items]
Equity method investment, ownership percentage	1.70%			1.70%
Dialog Semiconductor Plc [Member]
Related Party Transaction [Line Items]
Warrants outstanding	0			0
Dialog Semiconductor Plc [Member] \| Related Party [Member] \| Strategic Alliance Agreement [Member]
Related Party Transaction [Line Items]
Revenues	$ 0	0		$ 0	0
Dialog Semiconductor Plc [Member] \| Chip Development Expense [Member]
Related Party Transaction [Line Items]
Cost of revenue	$ 0	$ 0		$ 124,055	$ 0
Private Placements [Member] \| Dialog Semiconductor Plc [Member]
Related Party Transaction [Line Items]
Stock issued during period, shares, new issues			86,985
Private Placements [Member] \| Warrants Issued to Investors [Member] \| Dialog Semiconductor Plc [Member]
Related Party Transaction [Line Items]
Class of warrant or right, number of securities called by warrants or rights			70,878

Stock Based Compensation - Summary of Stock-based Compensation Costs Recognized (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock options	$ 21,564	$ 21,564	$ 63,989	$ 53,207
Total	368,907	698,222	1,394,877	2,158,915
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Compensation-based payments	341,443	586,652	1,273,380	1,933,301
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Compensation-based payments	4,488	67,922	15,089	67,922
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Compensation-based payments	$ 1,412	$ 22,084	$ 42,419	$ 104,485

Liquidity and Management Plans

9 Months Ended

Sep. 30, 2023

Liquidity And Management Plan Disclosure [Abstract]

Liquidity and Management Plans

Note 2 – Liquidity and Management Plans

During the three and nine months ended September 30, 2023, the Company recorded revenue of $168,708 and $382,517, respectively. During the three and nine months ended September 30, 2023, the Company recorded net losses of $4,114,594 and $14,762,267, respectively. Net cash used in operating activities was $15,916,294 and $18,838,453 for the nine months ended September 30, 2023 and 2022, respectively. The Company is currently meeting its liquidity requirements through the proceeds of securities offerings that raised net proceeds of $27,043,751 during 2021, $744,787 during 2022 and $6,234,740 during the first three quarters of 2023, along with proceeds from contributions to the Company’s employee stock purchase plan (the “ESPP”) and payments received from customers.

As of September 30, 2023, the Company had cash and cash equivalents of $16,578,659. The Company expects that cash and cash equivalents as of September 30, 2023, together with expected additional ATM financing during the fourth quarter of 2023, implementation of cost and expense reductions and anticipated revenues, will be sufficient to fund the Company’s operations through November 2024.

Research and development of new technologies is by its nature unpredictable. Although the Company intends to continue its research and development activities, there can be no assurance that its available resources and revenue generated from its business operations will be sufficient to sustain its operations. Accordingly, the Company expects to pursue additional cost and expense reductions in addition to financing, which could include offerings of equity or debt securities, bank financings, commercial agreements with customers or strategic partners, and other alternatives, depending upon market conditions. There is no assurance that such cost and expense reductions and financing will be available on terms that the Company would find acceptable, or at all. If the Company is unsuccessful in implementing this plan, the Company will be required to make further cost and expense reductions or modifications to its on-going and strategic plans.

The market for products using the Company’s technology is broad and evolving, but remains nascent and unproven, so the Company’s success is dependent upon many factors, including customer acceptance of its existing products, technical feasibility of future products, regulatory approvals, the development of complementary technologies, competition and global market fluctuations.

Warrant Liability - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Mar. 31, 2023	Mar. 28, 2023
Class Of Warrant Or Right [Line Items]
Class of warrant or right, number of securities called by warrants or rights				412,500
Warrants exercisable term		6 years
Class of Warrant or Right, Exercise Price of Warrants or Rights				$ 8.00
Fair value of warrant liability	$ 450,000	$ 450,000
Change in fair value of warrant liability	(788,000)	(2,685,000)
Warrants Two Thousand Twenty Three
Class Of Warrant Or Right [Line Items]
Warrant liability	3,135,000	3,135,000
Fair value of warrant liability	450,000	450,000
Change in fair value of warrant liability	$ (788,000)	$ (2,685,000)
Common Stock [Member] \| Warrants Two Thousand Twenty Three
Class Of Warrant Or Right [Line Items]
Number of warrants issued			412,500
Class of warrant or right, number of securities called by warrants or rights			412,500
Warrants exercisable term		6 years
Warrants of exercisable beginning		Mar. 28, 2023
Each warrant of exercisable			1
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1.66	$ 1.66	$ 8

Stockholders' Equity

9 Months Ended

Sep. 30, 2023

Equity [Abstract]

Stockholders' Equity

Note 5 – Stockholders’ Equity

Authorized Capital

The holders of the Company’s common stock are entitled to one vote per share. Holders of common stock are entitled to receive ratably such dividends, if any, as may be declared by the Board out of legally available funds. Upon the liquidation, dissolution or winding up of the Company, holders of common stock are entitled to share ratably in all assets of the Company that are legally available for distribution.

Note 5 – Stockholders’ Equity, continued

Financing

On September 15, 2020, the Company filed a shelf registration statement on Form S-3 with the SEC, which became effective on September 24, 2020 (the "Prior Shelf"), and contains two prospectuses: a base prospectus, which covered the offering, issuance and sale by the Company of up to $75,000,000 of its common stock, preferred stock, debt securities, warrants to purchase our common stock, preferred stock or debt securities, subscription rights to purchase its common stock, preferred stock or debt securities and/or units consisting of some or all of these securities; and an at-the-market sales agreement prospectus supplement covering the offering, issuance and sale by the Company of up to a maximum aggregate offering price of $40,000,000 of its common stock that may be issued and sold under the At Market Issuance Sales Agreement, as amended, between the Company and B. Riley Securities, Inc. (the “ATM Program”). The $40,000,000 of common stock to be offered, issued and sold under the ATM Program was included in the $75,000,000 of securities that could have been offered, issued and sold by the Company under the base prospectus. On September 24, 2023, the Prior Shelf expired and no further securities were issued under it. Pursuant to the Prior Shelf, the Company sold shares which raised net proceeds of $38,832,711 (net of $1,167,289 in issuance costs) during the third and fourth quarters of 2020 under the ATM Program.

On October 4, 2021, the Company filed a prospectus supplement to the Prior Shelf covering the offering, issuance and sale of up to an additional $35,000,000 of shares of the Company’s common stock pursuant to the ATM Program. The Company raised net proceeds of $27,043,751 (net of $868,122 in issuance costs) during 2021 under the ATM Program. During 2022, the Company raised an additional $744,787 (net of $73,403 in issuance costs) under the ATM Program. During the first quarter of 2023, the Company raised $2,674,697 (net of $68,637 in issuance costs) under the ATM Program. During the third quarter of 2023, the Company raised $880,866 (net of $94,162 in issuance costs) under the ATM Program. As of September 30, 2023, there is no amount left remaining on the Prior Shelf due to its expiration on September 24, 2023.

On November 15, 2021, the Company filed a shelf registration statement on Form S-3 with the SEC, which became effective on December 16, 2021 (the "Current Shelf"). This shelf registration statement allows the Company to sell, from time to time, any combination of debt or equity securities described in the registration statement up to aggregate proceeds of $100,000,000. Pursuant to this registration statement, on March 28, 2023, the Company completed an underwritten offering pursuant to which it issued and sold an aggregate of (i) 412,500 shares of its common stock (the “Shares”) and (ii) warrants to purchase up to 412,500 shares of its common stock (the “2023 Warrants”), for net proceeds of $2,677,191, after deducting underwriting discounts, commission and expenses payable by the Company. The 2023 Warrants were immediately exercisable upon issuance and have a term of six years and an exercise price of $8.00. The Company allocated the proceeds received first to the 2023 Warrants based on the fair value of the 2023 Warrants as determined at initial measurement, with the remaining proceeds allocated to the Shares (see Note 7 – Warrant Liability and Note 8 – Fair Value Measurements). Pursuant to the terms of the 2023 Warrants, the exercise price was adjusted to $1.66 as of September 30, 2023.

On August 30, 2023, the Company filed a prospectus supplement to the Current Shelf covering the offering, issuance and sale of up to an additional $25,000,000 of shares of the Company’s common stock pursuant to the ATM Program. During the third quarter of 2023, the Company raised $1,986 (net of $56 in issuance costs) under the ATM Program. As of September 30, 2023, the Company has $24,997,958 remaining available under the ATM Program.

Common Stock Outstanding

Our outstanding shares of common stock typically include shares that are deemed delivered under US GAAP. Shares that are deemed delivered currently include shares that have vested, but have not yet been delivered, under tax-deferred equity awards, as well as shares purchased under the ESPP where actual transfer of shares normally occurs a few days after the completion of the purchase periods. There are no voting rights for shares that are deemed delivered under US GAAP until the actual delivery of shares takes place. There are currently 200,000,000 shares of common stock authorized for issuance.

- Definition

The entire disclosure for equity.

+ References

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+ Details

Commitments and Contingencies - Hosted Design Software Agreement - Additional Information (Detail) - USD ($)		1 Months Ended
	Jun. 25, 2015	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Initial term of agreement	3 years
Quarterly payments for service agreement		$ 233,000

Stock Based Compensation - Performance Share Units - Additional Information (Detail) - Performance Share Units [Member] - USD ($)				9 Months Ended		12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Jul. 20, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period				2,500
Share based compensation arrangement by share based payment award equity instruments other than options vested in period				0				6,779
Share based compensation arrangement by share based payment award unamortized value				$ 9,848
Share based compensation arrangement by share based payment award compensation cost not yet recognized, period for recognition				3 months 18 days
Mr. Johnston [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period			14,350		14,350			14,350
Share based compensation arrangement by share based payment award equity instruments other than options vested in period					14,350
Mr. Johnston [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award equity instruments other than options vested in period								9,350
Mr. Johnston [Member] \| Maximum [Member] \| Forecast
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award equity instruments other than options vested in period	2,500	2,500				2,500	2,500

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Subsequent Event

9 Months Ended

Sep. 30, 2023

Subsequent Events [Abstract]

Subsequent Event

Note 11 - Subsequent Event

On November 13, 2023, Cesar Johnston, the Company’s President and Chief Executive Officer, purchased 52,000 shares of the Company’s common stock at a purchase price of $1.82 per share pursuant to the Common Stock Purchase Agreement dated as of November 13, 2023 between the Company and Mr. Johnston.

Commitments and Contingencies - MBO Bonus Plan - Additional Information (Detail) - Accrued Expenses [Member] - Executive Officers [Member] - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Sep. 30, 2023	Sep. 30, 2023
Commitments And Contingencies [Line Items]
Bonus expense		$ 146,758	$ 445,394
Forecast
Commitments And Contingencies [Line Items]
Bonus expense	$ 187,798

Summary of Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Summary Of Significant Accounting Policies [Line Items]
Total potentially dilutive securities	597,020	312,319	597,020	312,319
Warrants Issued to Investors [Member]
Summary Of Significant Accounting Policies [Line Items]
Total potentially dilutive securities	495,833	164,239	495,833	164,239
Employee Stock Option [Member]
Summary Of Significant Accounting Policies [Line Items]
Total potentially dilutive securities	15,000	15,013	15,000	15,013
Restricted Stock Units (RSUs) [Member]
Summary Of Significant Accounting Policies [Line Items]
Total potentially dilutive securities	83,687	123,717	83,687	123,717
Performance Share Units [Member]
Summary Of Significant Accounting Policies [Line Items]
Total potentially dilutive securities	2,500	9,350	2,500	9,350

Commitments and Contingencies - Employee Agreement - Stephen Rizzone - Additional Information (Detail) - USD ($)				3 Months Ended
	Jul. 09, 2021	Jun. 25, 2015	Jan. 01, 2015	Mar. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Commitments And Contingencies [Line Items]
Initial term of agreement		3 years
Accrued expenses					$ 1,672,936	$ 1,790,414
Mr. Rizzone [Member]
Commitments And Contingencies [Line Items]
Agreement effective date			Jan. 01, 2015
Initial term of agreement			4 years
Officers' compensation				$ 365,000
Employment agreement percentage of base salary				100.00%
Accrued expenses					$ 0
Mr. Rizzone [Member] \| Separation Agreement [Member]
Commitments And Contingencies [Line Items]
Compensation-based payments	$ 1,460,000
Additional lump sum cash payment	$ 2,000,000
Description of other commitments	a pro-rated bonus payment for the two months of employment during the then current quarterly bonus period payable at the same time bonus payments were made to other executives of the Company, settlement of deferred vested RSUs and an extension of the exercise periods of all stock options held by Mr. Rizzone until the one year anniversary of his termination date, and additional benefits related to Mr. Rizzone’s medical insurance.

Condensed Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	5,046,994	3,947,267
Common stock, shares outstanding	5,046,994	3,947,267

Liquidity and Management Plans - Additional Information (Detail) - USD ($)	3 Months Ended						9 Months Ended		12 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Liquidity And Management Plans [Line Items]
Engineering product development	$ 168,708			$ 223,201			$ 382,517	$ 672,133
Net loss	(4,114,594)	$ (3,995,166)	$ (6,652,507)	$ (5,964,875)	$ (7,017,749)	$ (7,152,718)	(14,762,267)	(20,135,342)
Net cash provided by (used in) operating activities							(15,916,294)	$ (18,838,453)
Net proceeds of securities offerings							6,234,740		$ 744,787	$ 27,043,751
Cash and cash equivalents, at carrying value, total	16,578,659						16,578,659		$ 26,287,293
Technology Service [Member]
Liquidity And Management Plans [Line Items]
Engineering product development	$ 168,708						$ 382,517

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details

Commitments and Contingencies - Executive Transition Agreement - William Mannina - Additional Information (Detail) - USD ($)	Jul. 20, 2023	Sep. 30, 2023	Dec. 31, 2022
Commitments And Contingencies [Line Items]
Accrued severance expense		$ 202,946	$ 416,516
Mr. William Mannina [Member]
Commitments And Contingencies [Line Items]
Payments and benefits to be received including cash severance payments	$ 265,825
Accrued severance expense		$ 196,941

Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Schedule of Reconciliation of Undiscounted Cash Flows to Lease Liabilities Recognized

A reconciliation of undiscounted cash flows to lease liabilities recognized as of September 30, 2023 is as follows:


	Amount
	(unaudited)
2023		182,009
2024		733,497
2025		562,408
Total future lease payments		1,477,914
Present value discount (3.0% weighted average)		(41,574	)
Total operating lease liabilities	$	1,436,340

Stock Based Compensation - Summary of Activity Related to PSUs (Details) - Performance Share Units [Member] - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of Options, Outstanding	0
Shares granted	2,500
Shares Forfeited	0
Shares vested	0	6,779
Number of Options, Outstanding	2,500	0
Weighted Average Grant Date Fair Value, Beginning Balance	$ 0
Weighted Average Grant Date Fair Value, Shares Granted	6.2
Weighted Average Grant Date Fair Value, Shares Forfeited	0
Weighted Average Grant Date Fair Value, Shares Vested	0
Weighted Average Grant Date Fair Value, Ending Balance	$ 6.2	$ 0

Significant Accounting Policies - Additional Information (Detail)			3 Months Ended		9 Months Ended
	Aug. 15, 2023 shares	Apr. 30, 2015	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) shares	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) shares	Aug. 16, 2023 shares	Mar. 28, 2023 $ / shares
Summary Of Significant Accounting Policies [Line Items]
Revenue \| $			$ 168,708	$ 223,201	$ 382,517	$ 672,133
Research and development expense, total \| $			2,460,123	2,885,830	8,418,779	9,622,886
Liability for unrecognized tax benefits \| $			0		0
Interest or penalties for uncertain tax positions \| $			$ 0	$ 0	$ 0	$ 0
Antidilutive securities excluded from computation of earnings per share, amount			597,020	312,319	597,020	312,319
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares								$ 8.00
Shares issued prior to reverse stock split	92,069,632
Shares outstanding prior to reverse stock split	92,069,632
Shares outstanding after reverse stock split							4,601,654
Cash in lieu of fractional shares \| $					$ 6,250
Reverse stock split, description					1-for-20
Reverse stock split, conversion ratio	20		20		20
Warrants Issued to Investors [Member]
Summary Of Significant Accounting Policies [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount			495,833	164,239	495,833	164,239
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares			$ 1.66		$ 1.66
Warrants Issued to Investors [Member] \| Expiring at March 1 2024 [Member]
Summary Of Significant Accounting Policies [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount					83,333
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares			200.00		$ 200.00
Warrants Issued to Investors [Member] \| Expiring on March 28 2029 [Member]
Summary Of Significant Accounting Policies [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount					412,500
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares			$ 1.66		$ 1.66
Employee Stock Purchase Plan [Member]
Summary Of Significant Accounting Policies [Line Items]
Common stock purchase price discount percentage		85.00%			15.00%
Product Development Projects Revenue [Member]
Summary Of Significant Accounting Policies [Line Items]
Revenue \| $			$ 168,708	$ 223,201	$ 382,517	$ 672,133

Fair Value Measurements

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note 8 – Fair Value Measurements

The following tables present information about the Company’s assets and liabilities that are measured at fair value on a recurring basis as of September 30, 2023 and December 31, 2022 and indicate the fair value hierarchy of the valuation inputs utilized to determine such fair value:


	Balance as of September 30, 2023
	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	16,578,659	$	–	$	–	$	16,578,659
Liabilities:
Warrant liability	$	–	$	–	$	450,000	$	450,000


	Balance as of December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	26,287,293	$	–	$	–	$	26,287,293
Liabilities:
Warrant liability	$	–	$	–	$	–	$	–

Note 8 – Fair Value Measurements, continued

There were no transfers among Level 1, Level 2, or Level 3 categories during the periods presented.

2023 Warrants

The Company utilizes a Monte Carlo simulation model for the 2023 Warrants at each reporting period, with changes in fair value recognized in the statements of operations. The estimated fair value of the 2023 Warrant liability is determined using Level 3 inputs. Inherent in a Monte Carlo simulation model are assumptions related to expected share-price volatility, expected life, risk-free interest rate, and dividend yield.

The key inputs into the Monte Carlo simulation model for the 2023 Warrants are as follows:


	At March 31, 2023			At June 30, 2023			At September 30, 2023
Share price	$	10.80		$	4.80		$	1.60
Exercise price	$	8.00		$	8.00		$	1.66
Term (in years)		6.0			5.7			5.5
Volatility		65	%		65	%		75	%
Risk-free rate		3.6	%		4.1	%		4.6	%
Dividend yield		0	%		0	%		0	%

The decrease in the fair value of the 2023 Warrant liability was determined to be $788,000 and $2,685,000 during the three and nine months ended September 30, 2023, respectively (see Note 7 – Warrant Liability).

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The computation of diluted loss per share excludes potentially dilutive securities of 597,020 for both the three and nine months ended September 30, 2023 and 312,319 for both the three and nine months ended September 30, 2022, as outlined in the table below, because their inclusion would be anti-dilutive.


	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2023		2022		2023		2022
Warrants issued to investors		495,833		164,239		495,833		164,239
Options to purchase common stock		15,000		15,013		15,000		15,013
RSUs		83,687		123,717		83,687		123,717
PSUs		2,500		9,350		2,500		9,350
Total potentially dilutive securities		597,020		312,319		597,020		312,319

Stock Based Compensation - Restricted Stock Units - Additional Information (Detail) - Restricted Stock Units (RSUs) [Member]	9 Months Ended
	Sep. 30, 2023 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee service share-based compensation, nonvested awards, compensation not yet recognized, share-based awards other than options \| $	$ 1,428,206
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition	1 year 10 months 24 days
2013 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	5 years
2013 Equity Incentive Plan [Member] \| Employee [Member] \| Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period	3,439
Non-Employee Equity Compensation Plan 2014 [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	1 year
Non-Employee Equity Compensation Plan 2014 [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	4 years
Non-Employee Equity Compensation Plan 2014 [Member] \| Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period	6,223
2017 Equity Inducement Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	4 years
2017 Equity Inducement Plan [Member] \| Employee [Member] \| Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period	30,750

Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Note 3 – Summary of Significant Accounting Policies

Basis of Presentation

The accompanying financial statements are presented in U.S. dollars and have been prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”), and pursuant to the accounting and disclosure rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”).

These unaudited condensed interim financial statements should be read in conjunction with the audited financial statements and notes thereto for the fiscal year ended December 31, 2022 included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2022, filed with the SEC on March 30, 2023. The accounting policies used in preparing these unaudited condensed interim financial statements are consistent with those described in the Company’s December 31, 2022 audited financial statements.

Use of Estimates

The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the date of the financial statements as well as the reported expenses during the reporting periods.

The Company’s significant estimates and assumptions include the valuation of stock-based compensation instruments, recognition of revenue, inventory valuation, fair value of warrant liabilities and the valuation allowance on deferred tax assets. Some of these judgments can be subjective and complex, and, consequently, actual results may differ from these estimates. Although the Company believes that its estimates and assumptions are reasonable, they are based upon information available at the time the estimates and assumptions were made. Actual results could differ from those estimates.

Cash and Cash Equivalents

The Company considers all short-term, highly liquid investments with an original maturity at the date of purchase of three months or less to be cash equivalents. The Company maintains cash balances that may be uninsured or in deposit accounts that exceed Federal Deposit Insurance Corporation limits. The Company maintains its cash deposits with major financial institutions.

Warrants

The Company accounts for warrants as either equity-classified or liability-classified instruments based on an assessment of the warrant’s specific terms and applicable authoritative guidance in Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 480, “Distinguishing Liabilities from Equity” (“ASC 480”), and ASC 815, “Derivatives and Hedging” (“ASC 815”). The assessment considers whether the warrants are freestanding financial instruments pursuant to ASC 480, meet the definition of a liability pursuant to ASC 480, and whether the warrants meet all of the requirements for equity classification under ASC 815, including whether the warrants are indexed to the Company’s common stock, among other conditions for equity classification. This assessment, which requires the use of professional judgment, is conducted at the time of warrant issuance and as of each subsequent quarterly period end date while the warrants are outstanding.

For issued or modified warrants that meet all of the criteria for equity classification, the warrants are required to be recorded as a component of additional paid-in capital at the time of issuance. For issued or modified warrants that do not meet all the criteria for equity classification, the warrants are required to be recorded as a liability at their initial fair value on the date of issuance, and each balance sheet date thereafter. Changes in the estimated fair value of the warrants are recognized as a non-cash gain or loss on the statements of operations. The fair value of the warrants is estimated using an appropriate valuation model. Such warrant classification is also subject to re-evaluation at each reporting period.

Offering costs associated with warrants classified as liabilities are expensed as incurred and are presented as offering cost related to warrant liability in the statement of operations. Offering costs associated with the sale of warrants classified as equity are charged against proceeds.

Fair Value

The Company follows ASC 820, Fair Value Measurements (“ASC 820”), which establishes a common definition of fair value to be applied when US GAAP requires the use of fair value, establishes a framework for measuring fair value, and requires certain disclosure about such fair value measurements.

Note 3 – Summary of Significant Accounting Policies, continued

ASC 820 establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about what market participants would use in pricing the asset or liability based on the best information available in the circumstances. The hierarchy is broken down into three levels based on the reliability of inputs as follows:

•

Level 1: Observable inputs such as quoted prices in active markets for identical assets or liabilities to which the Company has access at a measurement date.

•

Level 2: Observable inputs other than Level 1 quoted prices that are observable for the asset or liability, either directly or indirectly; these include quoted prices for similar assets or liabilities in an active market, quoted prices for identical assets and liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

•

Level 3: Unobservable inputs for which little or no market data exists and for which the Company must develop its own assumptions regarding the assumptions that market participants would use in pricing the asset or liability, including assumptions regarding risk.

Because of the uncertainties inherent in the valuation of assets or liabilities for which there are no observable inputs, those estimated fair values may differ significantly from the values that may have been used had a ready market for the assets or liabilities existed.

The carrying amounts of the Company’s financial assets and liabilities, such as cash, cash equivalents, prepaid expenses, other current assets, and accounts payable & accrued expenses, are an approximate of their fair values because of the short maturity of these instruments. The Company’s derivative liabilities recognized at fair value on a recurring basis are a level 3 measurement (see Note 8 – Fair Value Measurement).

Revenue Recognition

The Company follows Accounting Standards Codification (“ASC”) 606, "Revenue from Contracts with Customers" (“Topic 606”).

In accordance with Topic 606, the Company recognizes revenue using the following five-step approach:

Identify the contract with a customer.

Identify the performance obligations in the contract.

Determine the transaction price of the contract.

Allocate the transaction price to the performance obligations in the contract.

Recognize revenue when or as the performance obligations are satisfied.

The Company’s revenue consists of its single segment of wireless charging system solutions. The wireless charging system revenue consists of revenue from product development projects and production-level systems. During the three and nine months ended September 30, 2023, the Company recognized $168,708 and $382,517, respectively, in revenue. During the three and nine months ended September 30, 2022, the Company recognized $223,201 and $672,133, respectively, in revenue.

The Company records revenue associated with product development projects that it enters into with certain customers. In general, these product development projects are complex, and the Company does not have certainty about its ability to achieve the project milestones. The achievement of a milestone is dependent on the Company’s performance obligation and requires acceptance by the customer. The Company recognizes this revenue at the point in time at which the performance obligation is met. The payment associated with achieving the performance obligation is generally commensurate with the Company’s effort or the value of the deliverable and is nonrefundable. The Company records the expenses related to these product development projects in research and development expense, in the periods such expenses were incurred.

Note 3 – Summary of Significant Accounting Policies, continued

Inventory

The Company follows ASC 330, Inventory (“Topic 330”) to account for its inventory, which includes finished goods ready for sale, work in process and raw materials, at the lower of cost or net realizable value. Net realizable value is calculated at the end of each reporting period and adjustment, if needed, is made.

Research and Development

Research and development expenses are charged to operations as incurred. For internally developed patents, all patent costs are expensed as incurred as research and development expense. Patent application costs, which are generally legal costs, are expensed as research and development costs until such time as the future economic benefits of such patents become more certain. The Company incurred research and development costs of $2,460,123 and $8,418,779 for the three and nine months ended September 30, 2023, respectively. The Company incurred research and development costs of $2,885,830 and $9,622,886 for the three and nine months ended September 30, 2022, respectively.

Stock-Based Compensation

The Company accounts for equity instruments issued to employees, board members and contractors in accordance with accounting guidance that requires awards to be recorded at their fair value on the date of grant and amortized over the vesting period of the award. The Company amortizes compensation costs on a straight-line basis over the requisite service period of the award, which is typically the vesting term of the equity instrument issued.

Under the ESPP, employees may purchase a limited number of shares of the Company’s common stock at a 15% discount from the lower of the closing market prices measured on the first and last days of each half-year period. The Company recognizes stock-based compensation expense for the fair value of the purchase options, as measured on the grant date.

Income Taxes

Tax benefits are recognized only for tax positions that are more likely than not to be sustained upon examination by tax authorities. The amount recognized is measured as the largest amount of benefit that is greater than 50 percent likely to be realized upon settlement. A liability for “unrecognized tax benefits” is recorded for any tax benefits claimed in the Company’s tax returns that do not meet these recognition and measurement standards. As of September 30, 2023, no liability for unrecognized tax benefits was required to be reported. The guidance from ASC 740, Income Taxes, also discusses the classification of related interest and penalties on income taxes. The Company’s policy is to record interest and penalties on uncertain tax positions as a component of income tax expense. No interest or penalties were recorded during the three or nine months ended September 30, 2023 and 2022. The Company files income tax returns with the United States and California governments.

Accounting for Reverse Stock Split

During the three months ended September 30, 2023, the Company effected a reverse stock split of its common stock at a ratio of 1-for-20 (See Note 1 - Business Organization, Nature of Operations, Reverse Stock Split). On August 15, 2023, the Company had 92,069,632 shares of common stock issued and outstanding prior to the reverse stock split taking effect. On August 16, 2023, the Company had 4,601,654 shares of outstanding common stock after the reverse stock split became effective. No fractional shares were issued in connection with the reverse stock split, and stockholders of record who would have otherwise been entitled to receive a fractional share received a cash payment in lieu thereof. The Company paid approximately $6,250 for cash in lieu of fractional shares. The par value of the Company's common stock did not change and no adjustments to historical par value were made. All information presented in the accompanying financial statements, unless otherwise indicated herein, reflects the 1-for-20 reverse stock split of the Company’s outstanding shares of common stock, and unless otherwise indicated, all such amounts and corresponding conversion price or exercise price data set forth herein have been adjusted to give effect to such reverse stock split.

Note 3 – Summary of Significant Accounting Policies, continued

Net Loss Per Common Share

Basic net loss per share is computed by dividing net loss available to common stockholders by the weighted average number of shares of common stock outstanding during the period. Diluted earnings per share is computed using the weighted average number of common shares and, if dilutive, potential common shares outstanding during the period. Potential common shares consist of the incremental common shares issuable upon the exercise of stock options and warrants (using the treasury stock method), the vesting of restricted stock units (“RSUs”) and performance stock units (“PSUs”) and the enrollment of employees in the ESPP. The computation of diluted loss per share excludes potentially dilutive securities of 597,020 for both the three and nine months ended September 30, 2023 and 312,319 for both the three and nine months ended September 30, 2022, as outlined in the table below, because their inclusion would be anti-dilutive.


	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2023		2022		2023		2022
Warrants issued to investors		495,833		164,239		495,833		164,239
Options to purchase common stock		15,000		15,013		15,000		15,013
RSUs		83,687		123,717		83,687		123,717
PSUs		2,500		9,350		2,500		9,350
Total potentially dilutive securities		597,020		312,319		597,020		312,319

The table above includes 83,333 warrants expiring on March 1, 2024, which have an exercise price of $200.00 and 412,500 warrants expiring on March 28, 2029, which have an exercise price of $1.66.

Leases

The Company determines if an arrangement is a lease at the inception of the arrangement. The Company applies the short-term lease recognition exemption and recognizes lease payments in profit or loss at lease commencement for facility or equipment leases that have a lease term of 12 months or less and do not include a purchase option whose exercise is reasonably certain. Operating leases are included in operating lease right-of-use (“ROU”) assets and operating lease liabilities.

ROU assets represent the right to use an underlying asset for the lease term, and lease liabilities represent the obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are measured and recorded at the later of the adoption date, January 1, 2019, or the service commencement date based on the present value of lease payments over the lease term. The Company uses the implicit interest rate when readily determinable; however, most leases do not establish an implicit rate, so the Company uses an estimate of the incremental borrowing rate based on the information available at the time of measurement. Lease expense for lease payments is recognized on a straight-line basis over the lease term. See Note 4 – Commitments and Contingencies, Operating Leases for further discussion of the Company’s operating leases.

Management’s Evaluation of Subsequent Events

The Company evaluates events that have occurred after the balance sheet date of September 30, 2023, through the date which the financial statements are available to be issued.

Stock Based Compensation - Equity Incentive Plan - Additional Information (Detail) - USD ($)		9 Months Ended
	Apr. 30, 2015	Sep. 30, 2023	Jun. 14, 2023	Jul. 20, 2022	Jun. 16, 2021	May 26, 2020	Dec. 28, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee contribution through payroll withholdings		$ 3,493
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized for issuance			102,500
Common stock, capital shares reserved for future issuance	30,000		25,000
Common stock remain eligible to be issued		18,741
Lowest percentage of annual compensation to be utilized by an employee for purchase of shares under the plan	1.00%
Highest percentage of annual compensation to be utilized by an employee for purchase of shares under the plan	10.00%
Vesting period	6 months
Exercise price discount from fair value on offering date	85.00%
Exercise price discount from fair value on exercise date	85.00%	15.00%
Share-based compensation arrangement by share-based payment award, terms of award		In April 2015, the Company’s Board approved the ESPP, under which 30,000 shares of common stock have been reserved for purchase by the Company’s employees, subject to the approval by the Company’s stockholders. On May 21, 2015, the Company’s stockholders approved the ESPP. Effective on June 14, 2023, the Company’s stockholders approved the amendment and restatement of the ESPP to increase the number of shares reserved for issuance through equity-based instruments thereunder by 25,000 shares, bringing to 102,500 the total number of shares approved for issuance under that plan. Under the ESPP, employees may designate an amount not less than 1% but not more than 10% of their annual compensation for the purchase of Company shares. An offering period shall be six months in duration commencing on or about January 1 and July 1 of each year. The exercise price of the option will be the lesser of 85% of the fair market of the common stock on the first business day of the offering period and 85% of the fair market value of the common stock on the applicable exercise date.
2013 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized for issuance			489,298
Common stock, capital shares reserved for future issuance			50,000
Common stock remain eligible to be issued		118,565
Non-Employee Equity Compensation Plan 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized for issuance						82,500
Common stock, capital shares reserved for future issuance						40,000
Common stock remain eligible to be issued		29,137
2015 Performance Share Unit Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized for issuance					255,505
Common stock, capital shares reserved for future issuance					85,000
Common stock remain eligible to be issued		106,272
2017 Equity Inducement Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance				100,000
Common stock remain eligible to be issued		48,834
2017 Equity Inducement Plan [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance							30,000

Subsequent Event - Additional Information (Detail) - $ / shares	Nov. 13, 2023	Sep. 30, 2023	Dec. 31, 2022
Subsequent Event [Line Items]
Common stock, par value		$ 0.00001	$ 0.00001
Subsequent Event [Member] \| President and Chief Executive Officer [Member] \| Common Stock [Member]
Subsequent Event [Line Items]
Number of shares elected to purchase	52,000
Aggregate purchase price per share	$ 1.82

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2023	Nov. 09, 2023
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Trading Symbol	WATT
Entity Registrant Name	Energous Corp
Entity Central Index Key	0001575793
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		5,210,361
Title of 12(b) Security	Common Stock, $0.00001 par value
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity File Number	001-36379
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-1318953
Entity Address, Address Line One	3590 North First Street
Entity Address, Address Line Two	Suite 210
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95134
City Area Code	408
Local Phone Number	963-0200
Document Quarterly Report	true
Document Transition Report	false

Commitments and Contingencies - Schedule of Reconciliation of Undiscounted Cash Flows to Lease Liabilities Recognized (Detail)	Sep. 30, 2023 USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2023	$ 182,009
2024	733,497
2025	562,408
Total future lease payments	1,477,914
Present value discount (3.0% weighted average)	(41,574)
Total operating lease liabilities	$ 1,436,340

Stock Based Compensation - Stock Option Award Activity - Additional Information (Detail) - Employee Stock Purchase Plan [Member] - USD ($)	1 Months Ended	9 Months Ended
	Feb. 28, 2022	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		0
Exercise price per share of shares granted		$ 0
Employee service share-based compensation, nonvested awards, compensation not yet recognized, stock options		$ 169,700
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition		2 years 1 month 6 days
2013 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	15,000	0
2013 Equity Incentive Plan [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price per share of shares granted	$ 25.4
Share-based compensation arrangement by share-based payment award, award vesting description	half of the options vesting on the second anniversary of the vesting start date and a quarter of the options vesting on each of the two following anniversaries

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Basis of Presentation

Use of Estimates

Cash and Cash Equivalents

Warrants

Fair Value

•

Level 1: Observable inputs such as quoted prices in active markets for identical assets or liabilities to which the Company has access at a measurement date.

•

Revenue Recognition

The Company follows Accounting Standards Codification (“ASC”) 606, "Revenue from Contracts with Customers" (“Topic 606”).

In accordance with Topic 606, the Company recognizes revenue using the following five-step approach:

Identify the contract with a customer.

Identify the performance obligations in the contract.

Determine the transaction price of the contract.

Allocate the transaction price to the performance obligations in the contract.

Recognize revenue when or as the performance obligations are satisfied.

Inventory

Research and Development

Stock-Based Compensation

Income Taxes

Accounting for Reverse Stock Split

Net Loss Per Common Share


	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2023		2022		2023		2022
Warrants issued to investors		495,833		164,239		495,833		164,239
Options to purchase common stock		15,000		15,013		15,000		15,013
RSUs		83,687		123,717		83,687		123,717
PSUs		2,500		9,350		2,500		9,350
Total potentially dilutive securities		597,020		312,319		597,020		312,319

The table above includes 83,333 warrants expiring on March 1, 2024, which have an exercise price of $200.00 and 412,500 warrants expiring on March 28, 2029, which have an exercise price of $1.66

Leases

Management's Evaluation of Subsequent Events

Management’s Evaluation of Subsequent Events

The Company evaluates events that have occurred after the balance sheet date of September 30, 2023, through the date which the financial statements are available to be issued.

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis


	Balance as of September 30, 2023
	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	16,578,659	$	–	$	–	$	16,578,659
Liabilities:
Warrant liability	$	–	$	–	$	450,000	$	450,000


	Balance as of December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	26,287,293	$	–	$	–	$	26,287,293
Liabilities:
Warrant liability	$	–	$	–	$	–	$	–

Schedule of Estimated Fair Value of the Warrant Liability

The key inputs into the Monte Carlo simulation model for the 2023 Warrants are as follows:


	At March 31, 2023			At June 30, 2023			At September 30, 2023
Share price	$	10.80		$	4.80		$	1.60
Exercise price	$	8.00		$	8.00		$	1.66
Term (in years)		6.0			5.7			5.5
Volatility		65	%		65	%		75	%
Risk-free rate		3.6	%		4.1	%		4.6	%
Dividend yield		0	%		0	%		0	%

Stock Based Compensation - Summary of Stock Option Activity (Detail) - Employee Stock Option [Member] - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Outstanding	15,013
Shares granted	0
Number of Options, Exercised	0
Number of Options, Forfeited	(13)
Number of Options, Outstanding	15,000	15,013
Number of Options, Exercisable	13
Number of Options, Vested	0
Number of Options, Exercised	0
Number of Options, Forfeited	(13)
Number of Options, Exercisable	0	13
Weighted Average Exercise Price, Outstanding	$ 25.42
Weighted Average Exercise Price, Granted	0
Weighted Average Exercise Price, Exercised	0
Weighted Average Exercise Price, Forfeited	49.80
Weighted Average Exercise Price, Outstanding	25.40	$ 25.42
Weighted Average Exercise Price, Exercisable	49.80
Weighted Average Exercise Price, Vested	0
Weighted Average Exercise Price, Exercised	0
Weighted Average Exercise Price, Forfeited	49.80
Weighted Average Exercise Price, Exercisable	$ 0	$ 49.80
Weighted Average Remaining Life In Years, Outstanding	8 years 2 months 12 days	8 years 10 months 24 days
Weighted Average Remaining Life In Years, Exercisable		3 months 18 days
Intrinsic Value, Outstanding	$ 0	$ 0
Intrinsic Value, Exercisable	$ 0	$ 0

Fair Value Measurements - Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Liabilities:
Warrant liability	$ 450,000
Fair Value Measurements Recurring [Member]
Assets:
Cash and cash equivalents	16,578,659	$ 26,287,293
Liabilities:
Warrant liability	450,000
Level 1 [Member] \| Fair Value Measurements Recurring [Member]
Assets:
Cash and cash equivalents	16,578,659	$ 26,287,293
Level 3 [Member] \| Fair Value Measurements Recurring [Member]
Liabilities:
Warrant liability	$ 450,000

Condensed Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
Condensed Statements of Operations - USD ($)	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenue	$ 168,708	$ 223,201	$ 382,517	$ 672,133
Costs and expenses:
Cost of revenue	48,394	420,060	270,025	894,693
Research and development	2,460,123	2,885,830	8,418,779	9,622,886
Sales and marketing	774,141	1,093,640	3,074,163	3,865,322
General and administrative	1,698,380	1,931,386	5,763,811	5,983,845
Severance expense	269,109		359,419	633,444
Total costs and expenses	5,250,147	6,330,916	17,886,197	21,000,190
Loss from operations	(5,081,439)	(6,107,715)	(17,503,680)	(20,328,057)
Other (expense) income:
Offering costs related to warrant liability			(591,670)
Change in fair value of warrant liability	788,000		2,685,000
Interest income	178,845	142,840	648,083	192,715
Total other income	966,845	142,840	2,741,413	192,715
Net loss	$ (4,114,594)	$ (5,964,875)	$ (14,762,267)	$ (20,135,342)
Basic loss per common share	$ (0.86)	$ (1.54)	$ (3.3)	$ (5.21)
Weighted average shares outstanding, basic	4,762,187	3,879,804	4,467,436	3,867,330
Diluted loss per common share	$ (0.86)	$ (1.54)	$ (3.3)	$ (5.21)
Weighted average shares outstanding, diluted	4,762,187	3,879,804	4,467,436	3,867,330