Cash Proceeds Along with Fair Value Disclosures Related to Grants, Exercises, and Vesting Options (Detail) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | ||||
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Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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| Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] | |||||
| Proceeds from stock options exercised | $ 44 | $ 312 | $ 707 | ||
| Intrinsic value of stock options exercised | [1] | $ 52 | $ 108 | $ 860 | |
| Weighted-average fair value of options granted | $ 1.54 | $ 1.61 | $ 1.82 | ||
| Total fair value of shares vested during the year | $ 2,268 | $ 1,208 | $ 1,544 | ||
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- References No definition available.
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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- 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://www.xbrl.org/2003/role/presentationRef
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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://www.xbrl.org/2003/role/presentationRef
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