Income Taxes (Schedule of Effective Income Tax Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Tax at statutory rate	$ 72,663	$ 47,186	$ 46,600
State income taxes, net of federal tax benefits	11,599	8,580	8,575
Other, net	275	(150)	(213)
Total income tax expense (benefit)	$ 84,537	$ 55,616	$ 54,962