Income Taxes Schedule of Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal											$ 5,033	$ 17,749	$ (356)
State and local											1,633	775	1,044
Foreign											13,945	20,269	22,153
Total current											20,611	38,793	22,841
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal											3,951	(82,186)	(14,830)
State and local											(972)	(979)	(2,329)
Foreign											(41,893)	(51,646)	(27,953)
Total deferred											(38,914)	(134,811)	(45,112)
Change in valuation allowance											40,402	100,053	19,805
Total provision (benefit) for income taxes	$ 9,932	$ 4,098	$ 5,030	$ 2,557	$ 5,223	$ 1,061	$ 9,128	$ 6,284	$ 19,060	$ 8,841	$ 22,099	$ 4,035	$ (2,466)