Income Taxes - Components of Income Tax Expense (Benefit) by Jurisdiction and by Classification (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
U.S. Federal
Current		$ (12)	$ (780)
Deferred		(12,664)	(3,986)
Total		(12,676)	(4,766)
State and local
Current	$ 716	183	550
Deferred	104	(471)	(180)
Total	820	(288)	370
Foreign
Current	1,081	731	(145)
Deferred	(33)
Total	1,048	731	(145)
Total Income Taxes
Current	1,797	902	(375)
Deferred	71	(13,135)	(4,166)
Total	$ 1,868	$ (12,233)	$ (4,541)