Income Taxes - Expense (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal	$ 271	$ 496	$ 195
State	431	612	382
Foreign	4,393	4,930	6,487
Current tax provision (benefit)	5,095	6,038	7,064
Federal	(41)	(1,549)	1,100
State	113	70	(817)
Foreign	328	1,072	(1,748)
Deferred tax expense (benefit)	400	(407)	(1,465)
Income tax provision (benefit)	$ 5,495	$ 5,631	$ 5,599

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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