Income Taxes - Reconciliation of Income Tax Expense at Statutory Federal Rate to Actual Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income tax expense
Statutory expense	$ 179,898	$ 117,071	$ 120,768
State income taxes, net of federal benefit	32,581	21,001	21,572
Nondeductible compensation	7,285	7,372	4,005
Meals, entertainment and travel expense	2,640	3,336	1,694
Valuation allowance change	1,414	701	(932)
Adjustment for uncertain tax positions	55	52	(1,351)
Other, net	(344)	(427)	(827)
Income tax expense	$ 223,529	$ 149,106	$ 144,929
% pre-tax income (loss)
Statutory expense	21.00%	21.00%	21.00%
State income taxes, net of federal benefit	3.80%	3.80%	3.80%
Nondeductible compensation	0.80%	1.30%	0.70%
Meals, entertainment and travel expense	0.30%	0.60%	0.30%
Valuation allowance change	0.20%	0.10%	(0.20%)
Adjustment for uncertain tax positions	0.00%	0.00%	(0.20%)
Other, net	0.00%	(0.10%)	(0.20%)
Income tax expense	26.10%	26.70%	25.20%