Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income from continuing operations before income taxes:
U.S.	$ 34,129	$ 11,525	$ 33,070
International	148,492	146,421	133,430
Income from continuing operations before income taxes	182,621	157,946	166,500
Current:
U.S. – federal	7,215	(210)	22,673
U.S. – state	755	2,019	1,236
International	41,516	32,217	35,954
Current Income Tax Expense (Benefit)	49,486	34,026	59,863
Deferred:
U.S. – federal	6,091	7,670	(6,737)
U.S. – state	1,060	(1,137)	1,279
International	(9,617)	(3,993)	(8,446)
Deferred Income Tax Expense (Benefit)	(2,466)	2,540	(13,904)
Income taxes	$ 47,020	$ 36,566	$ 45,959