Income Taxes (Schedule of Provisions of Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current Income Tax Expense (Benefit), Continuing Operations
Federal	$ 33,655	$ 22,297	$ 62,274
State and local	6,764	6,416	10,720
Foreign	1,070	1,214	158
Total current provision	41,489	29,927	73,152
Deferred Income Tax Expense (Benefit), Continuing Operations
Federal	5,923	12,478	7,614
State and local	(969)	1,639	(806)
Foreign	(1,538)	(243)	0
Total deferred provision	3,416	13,874	6,808
Provision for income taxes	$ 44,905	$ 43,801	$ 79,960