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Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current:
Federal	$ 2,430	$ 6,724	$ 13,840
State	1,852	1,323	2,475
Foreign	745	46	203
Total current income taxes	5,027	8,093	16,518
Deferred:
Federal	(16,118)	(3,378)	846
State	(2,612)	(1,802)	(379)
Foreign	(7,781)	(5,464)	(1,501)
Total deferred income taxes	(26,511)	(10,644)	(1,034)
Total provision for (benefit from) income taxes	$ (21,484)	$ (2,551)	$ 15,484

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