Liquidity and Management Plans - Additional Information (Detail) - USD ($) |
1 Months Ended | 3 Months Ended | |||
|---|---|---|---|---|---|
Jul. 31, 2017 |
Mar. 31, 2018 |
Mar. 31, 2017 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Liquidity And Management Plans [Line Items] | |||||
| Engineering product development | $ 25,000 | $ 575,368 | |||
| Net income (loss) | (13,443,457) | (12,473,140) | |||
| Net cash provided by (used in) operating activities | (7,727,711) | (10,007,645) | |||
| Proceeds from issuance of common stock | 38,846,815 | ||||
| Cash and cash equivalents, at carrying value, total | 44,857,735 | $ 21,446,888 | $ 12,795,254 | $ 31,258,637 | |
| At-the-Market [Member] | |||||
| Liquidity And Management Plans [Line Items] | |||||
| Proceeds from issuance of common stock | $ 38,846,815 | ||||
| Private Placements [Member] | |||||
| Liquidity And Management Plans [Line Items] | |||||
| Proceeds from issuance of common stock | $ 14,932,547 | ||||
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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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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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/presentationRef
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- Definition The cash inflow from the additional capital contribution to the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Revenue from providing technology services. The services may include training, installation, engineering or consulting. Consulting services often include implementation support, software design or development, or the customization or modification of the licensed software. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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