Financial Instruments - Summary of Quantitative Information with Respect to Significant Unobservable Inputs (Detail) |
Apr. 06, 2018 |
May 31, 2017 |
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| April 2018 Warrant [Member] | ||
| Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
| Volatility | 70.00% | |
| Risk-free rate | 2.58% | |
| Term | 5 years | |
| 10% Warrant [Member] | ||
| Fair Value Inputs, Assets, Quantitative Information [Line Items] | ||
| Volatility | 70.00% | |
| Risk-free rate | 1.44% | |
| Discount for lack of marketability | 0.00% |
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- Definition Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Risk-free interest rate assumption used in valuing an instrument. 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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- Definition Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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