Liquidity and Management Plans - Additional Information (Detail) - USD ($) |
1 Months Ended | 3 Months Ended | 9 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2019 |
Jan. 31, 2018 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
Dec. 31, 2018 |
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| Liquidity And Management Plans [Line Items] | |||||||||||
| Engineering product development | $ 40,500 | $ 228,000 | $ 154,500 | $ 458,773 | |||||||
| Net loss | (8,184,227) | $ (9,803,996) | $ (11,019,468) | (12,645,291) | $ (12,298,371) | $ (13,443,457) | (29,007,691) | (38,387,119) | |||
| Net cash provided by (used in) operating activities | (20,968,817) | (24,398,264) | |||||||||
| Proceeds of securities offerings | $ 23,319,156 | $ 38,846,815 | 23,319,156 | 38,846,815 | |||||||
| Cash and cash equivalents, at carrying value, total | 22,800,024 | 22,800,024 | $ 20,106,485 | ||||||||
| Technology Service [Member] | |||||||||||
| Liquidity And Management Plans [Line Items] | |||||||||||
| Engineering product development | $ 40,500 | $ 228,000 | $ 154,500 | $ 458,773 | |||||||
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The cash inflow from the additional capital contribution to the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- 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. No definition available.
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- Details
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