Income Taxes (Schedule of Provisions of Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current Income Tax Expense (Benefit), Continuing Operations
Federal	$ 78,604	$ 42,541	$ 33,655
State and local	17,044	9,165	6,764
Foreign	1,936	839	1,070
Total current provision	97,584	52,545	41,489
Deferred Income Tax Expense (Benefit), Continuing Operations
Federal	2,192	2,342	5,923
State and local	(517)	(671)	(969)
Foreign	(4,954)	(3,175)	(1,538)
Total deferred provision	(3,279)	(1,504)	3,416
Provision for income taxes	$ 94,305	$ 51,041	$ 44,905