Income Taxes - Schedule of Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ 9,223	$ 20,553	$ 14,435
State	2,640	2,933	1,275
Foreign	1,468	876	1,129
Deferred:
Federal	(2,890)	(3,051)	922
State	(1,765)	(915)	151
Foreign	(614)	(134)	(363)
Provision for income taxes	$ 8,062	$ 20,262	$ 17,549