Income Taxes (Income Tax Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income before provision for income taxes	$ 220,562	$ 209,961	$ 181,043
Federal income tax expense at statutory rate	46,318	44,092	38,018
Increases (decreases) resulting from:
State income taxes, net of federal income tax benefits	10,585	13,946	12,974
Non-deductible expenses	3,511	6,205	2,859
Excess tax benefits on stock-based compensation	(285)	(561)	(206)
Changes in valuation allowance, net of equity and tax audit adjustments	202	(504)	(440)
Other	1,530	(371)	916
Income tax expense	$ 61,861	$ 62,807	$ 54,121