Common Stock - Additional Information (Detail) - USD ($) |
6 Months Ended | 12 Months Ended | |
|---|---|---|---|
Jun. 30, 2019 |
Dec. 31, 2018 |
Mar. 09, 2017 |
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| Equity [Abstract] | |||
| Common stock, shares authorized | 300,000,000 | 300,000,000 | 100,000,000 |
| Common stock, par value | $ 0.0001 | $ 0.0001 | $ 0.0001 |
| Dividends common stock declared or paid | $ 0 | ||
| Warrants outstanding | 317,562 | 317,562 | |
| Warrants exercise price per share | $ 5.00 | $ 5.00 | |
| Warrants term | 3 years | 3 years | |
| Warrants expiration date | Mar. 15, 2020 | Mar. 15, 2020 |
| X | ||||||||||
- Definition Class of warrant or right expiration date. No definition available.
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- Definition Class of warrant or right term. No definition available.
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- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of warrants or rights outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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