Income Taxes - Significant Components of Income Tax Provision/(Benefit) (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
U.S.	$ (1,312)	$ 329	$ 945
Non-U.S.	13,729	12,482	6,981
Total Current	12,417	12,811	7,926
Deferred:
U.S.	13,245	(15,795)	3,590
Non-U.S.	(2,797)	8,291	1,310
Total Deferred	10,448	(7,504)	4,900
Total provision for income taxes	$ 22,865	$ 5,307	$ 12,826