Income Taxes (Schedule of Components of Provision (Benefit) for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current
Federal	$ 52,194	$ 47,130	$ 92,453
State	11,967	10,415	9,258
International	24,239	22,015	23,993
Provision for current income taxes	88,400	79,560	125,704
Deferred
Federal	4,826	3,970	(1,201)
State	269	(937)	(4,102)
International	931	(1,898)	(2,613)
Provision (benefit) for deferred income taxes	6,026	1,135	(7,916)
Provision for income taxes	$ 94,426	$ 80,695	$ 117,788