Income Taxes (Components of the Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 5,513	$ 7,718	$ (19,461)
Foreign	49,862	63,205	70,146
State	(967)	1,697	16,259
Total current	54,408	72,620	66,944
Deferred:
Federal	(10,940)	(35,932)	1,899
Foreign	4,160	(209,010)	(14,804)
State	2,806	9	(251)
Total deferred	(3,974)	(244,933)	(13,156)
Total provision	$ 50,434	$ (172,313)	$ 53,788