Income Taxes - Components of Income Tax Expense (Benefit) Attributable to Current Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
(Loss) income before income tax (benefit) expense	$ (13,423)	$ (2,185)	$ 11,559
Current:
Federal tax	0	0	199
State tax	582	838	1,006
Foreign tax	13	148	270
Total current	595	986	1,475
Deferred:
Federal tax	(2,121)	(1,467)	26,348
State tax	(1,239)	(532)	(787)
Foreign tax	107	307	(171)
Total deferred	(3,253)	(1,692)	25,390
(Benefit from) provision for income taxes	$ (2,658)	$ (706)	$ 26,865