Cash Proceeds Along with Fair Value Disclosures Related to Grants, Exercises and Vested Options (Detail) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
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| Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] | ||||
| Proceeds from stock options exercised | $ 3 | $ 2 | ||
| Weighted-average fair value of options granted during period | $ 1.53 | $ 1.27 | $ 1.53 | $ 1.46 |
| Total fair value of shares vested during the period | $ 90 | $ 843 | $ 431 | $ 245 |
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- References No definition available.
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- Definition Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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