Income Taxes Schedule of Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	$ 20,490	$ 5,033	$ 17,749
State and local	2,708	1,633	775
Foreign	12,586	13,945	20,269
Total current	35,784	20,611	38,793
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	10,805	3,951	(82,186)
State and local	1,160	(972)	(979)
Foreign	(24,815)	(41,893)	(51,646)
Total deferred	(12,850)	(38,914)	(134,811)
Change in valuation allowance	26,640	40,402	100,053
Total provision for income taxes	$ 49,574	$ 22,099	$ 4,035