Income Taxes (Income Tax Provision from Continuing Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ (26,494)	$ (73,930)	$ (2,390)
State	(1,976)	(21,216)	(797)
Foreign	(100,074)	(55,045)	(57,934)
Deferred:
Federal	(616)	9,131	(4,180)
State	(259)	8	(973)
Foreign	(26,082)	(16,903)	3,769
Income tax provision	$ (155,501)	$ (157,955)	$ (62,505)