Income Taxes - Provision Benefit for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current
U.S.	$ 67,668	$ 73,059	$ 77,454
State and local	4,503	6,188	7,133
Foreign	42,540	30,630	37,060
Total current	114,711	109,877	121,647
Deferred
U.S.	(6,249)	7,125	(3,176)
State and local	(331)	(1,017)	(1,708)
Foreign	(10,728)	(6,447)	(3,709)
Total deferred	(17,308)	(339)	(8,593)
Total provision for income taxes	$ 97,403	$ 109,538	$ 113,054