Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands |
12 Months Ended | |||
---|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Dec. 31, 2012 |
|
Income Tax Disclosure [Line Items] | ||||
Deferred tax benefit recorded as an adjustment to other comprehensive income | $ 3,700 | $ 3,300 | ||
Deferred income tax benefit, foreign | (41) | (4,320) | $ (40) | |
Foreign and domestic carry-forwards, unamortized research and development cost and state credit carry-forwards | 16,300 | |||
Income tax benefit (expense) from exercise of stock options adjustment to equity | (40) | 100 | 200 | |
Unrecognized tax benefits | 2,537 | 3,334 | 3,240 | $ 2,926 |
Unrecognized tax benefits, effective tax rate | 1,800 | 2,600 | 2,500 | |
Accrued interest and penalties | $ 900 | $ 1,000 | $ 1,000 | |
Minimum [Member] | ||||
Income Tax Disclosure [Line Items] | ||||
Operating loss carry forwards expiration year | 2016 | |||
Maximum [Member] | ||||
Income Tax Disclosure [Line Items] | ||||
Operating loss carry forwards expiration year | 2030 |