Stock Based Compensation - Additional Information (Detail) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||
| Amortization of stock-based compensation | $ 1,378,000 | $ 27,000 | $ 1,430,000 | $ 85,000 |
| Unrecognized compensation cost related to unvested stock-based awards granted to employees under the stock option plans | $ 1,700,000 | $ 1,700,000 | ||
| Unrecognized compensation cost related to unvested stock-based awards granted to employees under the stock option plans, period for recognition | 3 years 9 months 18 days | |||
| Total intrinsic value of stock options exercised | $ 7,000 | 0 | ||
| Cash received from stock option exercises | 14,000 | $ 0 | ||
| Tax benefit realized upon exercise of option | 0 | |||
| 2014 Equity Incentive Plan | ||||
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||
| Amortization of stock-based compensation | $ 1,200,000 | |||
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, 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 Amount of tax benefit from exercise of stock options granted under share-based compensation arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement. 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 Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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