Warrants - Summary of Warrants Outstanding (Parenthetical) (Detail) |
6 Months Ended |
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Jun. 30, 2019 | |
| Class Seven [Member] | |
| Class of Warrant or Right [Line Items] | |
| Trading period | 21 days |
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- Definition Number Of Consecutive Trading Days No definition available.
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| X | ||||||||||
- 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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| X | ||||||||||
- Details
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