Income Taxes - Schedule of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Federal	$ 949	$ 8,525	$ 4,948
State	1,504	8,307	1,988
Foreign	1,737	1,332	828
Total current	4,190	18,164	7,764
Federal	2,730	(10,241)	(11,317)
State	(5,889)	(1,401)	(1,382)
Foreign	(2,364)	(2,049)	(4,872)
Total deferred	(5,523)	(13,691)	(17,571)
Total income tax (benefit) expense	$ (1,333)	$ 4,473	$ (9,807)