Income Taxes (Components of the Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 27,860	$ 22,377	$ 51,389
Foreign	43,796	30,878	37,221
State	10,238	7,710	11,605
Total current	81,894	60,965	100,215
Deferred:
Federal	(75,479)	(26,922)	(34,897)
Foreign	(2,746)	(1,023)	(8,413)
State	(11,153)	(9,037)	(8,538)
Total deferred	(89,378)	(36,982)	(51,848)
Total provision	$ (7,484)	$ 23,983	$ 48,367