Stockholders' Equity - Summary of Stock Warrants (Detail) - $ / shares |
6 Months Ended | |
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Jun. 30, 2020 |
Jun. 30, 2019 |
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| Equity [Abstract] | ||
| Number of Warrants, beginning balance | 3,959,287 | 3,843,587 |
| Number of warrants, granted | 125,000 | |
| Number of warrants, exercised | 1,227,700 | 9,300 |
| Number of Warrants, ending balance | 2,731,587 | 3,959,287 |
| Weighted Average Exercise Price, Outstanding at Ending Balance | $ 5.36 | $ 5.44 |
| Weighted Average Exercise Price, granted | 2.64 | |
| Weighted Average Exercise Price, exercised | 2.40 | 2.40 |
| Weighted Average Exercise Price, Outstanding at Ending Balance | $ 6.83 | $ 5.36 |
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- Definition Share based compensation arrangement by share based payment award equity instruments other than options exercised in period. No definition available.
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- Definition Share based compensation arrangement by share based payment award equity instruments other than options exercised in period weighted average grant date fair value. No definition available.
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- References No definition available.
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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