Income Taxes - Significant Components of Income Tax Provision/(Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
U.S.	$ 211	$ (391)	$ (397)
Non-U.S.	11,275	10,666	12,538
Total Current	11,486	10,275	12,141
Deferred:
U.S.	(2,815)	558	(330)
Non-U.S.	2,122	3,287	(240)
Total Deferred	(693)	3,845	(570)
Total provision for income taxes	$ 10,793	$ 14,120	$ 11,571