Income Taxes (Income Tax Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income before provision for income taxes	$ 248,452	$ 220,562	$ 209,961
Federal income tax expense at statutory rate	52,175	46,318	44,092
Increases (decreases) resulting from:
State income taxes, net of federal income tax benefits	10,640	10,585	13,946
Non-deductible expenses	3,867	3,511	6,205
Excess tax benefits on stock-based compensation	(320)	(285)	(561)
Changes in valuation allowance, net of equity and tax audit adjustments	2	202	(504)
Other	(1,438)	1,530	(371)
Income tax expense	$ 64,926	$ 61,861	$ 62,807