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Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 0	$ 0	$ 11
State	1	42	22
Foreign	9,140	4,688	3,121
Total current	9,141	4,730	3,154
Deferred:
Federal	338	(497)	338
State	(135)	361	(289)
Foreign	(640)	715	(56)
Total deferred	(437)	579	(7)
Total	$ 8,704	$ 5,309	$ 3,147

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