Stockholders' Equity - Additional Information (Detail) |
1 Months Ended | 3 Months Ended | 9 Months Ended | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 24, 2020
USD ($)
|
Aug. 17, 2018
USD ($)
|
Aug. 31, 2019
shares
|
Mar. 31, 2019
USD ($)
$ / shares
shares
|
Dec. 31, 2020
USD ($)
|
Sep. 30, 2020
USD ($)
Vote
shares
|
Jun. 30, 2020
USD ($)
|
Mar. 31, 2020
USD ($)
|
Dec. 31, 2019
USD ($)
shares
|
Sep. 30, 2019
shares
|
Jun. 30, 2019
USD ($)
|
Mar. 31, 2019
USD ($)
$ / shares
shares
|
Sep. 30, 2020
USD ($)
Vote
shares
|
|
Class of Stock [Line Items] | |||||||||||||
Number of common stock voting entitlement per share | Vote | 1 | 1 | |||||||||||
Proceeds from private offering of shares of common stock and warrants | $ 23,319,156 | $ 23,319,156 | |||||||||||
Net of issuance costs from offering of shares | $ 1,680,844 | $ 236,528 | $ 141,322 | $ 339,081 | |||||||||
Class of warrant or right, number of securities called by warrants or rights | shares | 1,666,666 | 1,666,666 | |||||||||||
Class of warrant or right, exercise price of warrants or rights | $ / shares | $ 10.00 | $ 10.00 | |||||||||||
Proceeds from at the market offering of shares of common stock and warrants | $ 3,007,058 | 9,216,611 | 5,506,880 | $ 4,557,693 | |||||||||
Common stock outstanding abstract | Our outstanding common shares 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 our Employee Stock Purchase Program (“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. As of September 30, 2020, a total of 200,000,000 common shares are authorized | ||||||||||||
Common stock, shares authorized | shares | 200,000,000 | 50,000,000 | 200,000,000 | ||||||||||
At-the-market ("ATM") funds receivable | $ 3,165,868 | ||||||||||||
Scenario Forecast [Member] | |||||||||||||
Class of Stock [Line Items] | |||||||||||||
Legal and accounting issuance costs will be paid | $ 158,810 | ||||||||||||
Maximum [Member] | |||||||||||||
Class of Stock [Line Items] | |||||||||||||
Securities reserved for issuance | $ 75,000,000 | ||||||||||||
Common Stock [Member] | |||||||||||||
Class of Stock [Line Items] | |||||||||||||
Proceeds from private offering of shares of common stock and warrants | $ 33 | ||||||||||||
Proceeds from at the market offering of shares of common stock and warrants | $ 10 | $ 33 | $ 44 | $ 1 | |||||||||
Number of shares returned | shares | (38,666) | ||||||||||||
RSU Rescission Agreements [Member] | Common Stock [Member] | |||||||||||||
Class of Stock [Line Items] | |||||||||||||
Number of shares returned | shares | 38,666 | ||||||||||||
Consummation of Offering Under Shelf Registration [Member] | |||||||||||||
Class of Stock [Line Items] | |||||||||||||
Proceeds from shelf registration debt or equity securities | $ 75,000,000 | ||||||||||||
Sales Agreement [Member] | |||||||||||||
Class of Stock [Line Items] | |||||||||||||
Sale of stock, Description | The $40,000,000 of common stock that may be offered, issued and sold under the sales agreement prospectus is included in the $75,000,000 of securities that may be offered, issued and sold by the Company under the base prospectus. | ||||||||||||
Sales Agreement [Member] | Maximum [Member] | |||||||||||||
Class of Stock [Line Items] | |||||||||||||
Proceeds from (Payments for) in Securities Sold under Agreements | $ 40,000,000 |