Warrants - Additional Information (Detail) - $ / shares |
6 Months Ended | 12 Months Ended | |
|---|---|---|---|
Apr. 06, 2018 |
Jun. 30, 2018 |
Dec. 31, 2017 |
|
| Equity [Abstract] | |||
| Common stock issued during period | 900,000 | ||
| Warrant exercise price | $ 2.00 | ||
| Warrant expiration period | 5 years | ||
| Warrant exercisable period | 6 months | ||
| Class of warrant issued | 900,000 | 900,000 | 2,177,425 |
| X | ||||||||||
- Definition Number of warrants granted in period. No definition available.
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| X | ||||||||||
- Definition Period of time between issuance and the date warrants become exercisable. No definition available.
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| X | ||||||||||
- Definition Period of time issuance and maturity of warrants, in PnYnMnDTnHnMnS format. No definition available.
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| X | ||||||||||
- 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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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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