Income Taxes - Schedule of Reconciliation of Income Tax Expense at Statutory Federal Rate to Actual Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income tax expense
U.S. federal statutory expense	$ 162,312	$ 179,898	$ 117,071
State income taxes, net of federal benefit	30,188	32,638	21,494
Nontaxable/nondeductible items	10,047	10,494	11,290
Changes in valuation allowance	168	1,414	701
Adjustment for uncertain tax positions	70	55	52
Other, net	126	215	(257)
Tax credits	(575)	(1,185)	(1,245)
Income tax expense	$ 202,336	$ 223,529	$ 149,106
% pre-tax income (loss)
U.S. federal statutory expense	21.00%	21.00%	21.00%
State income taxes, net of federal benefit	4.00%	3.80%	3.90%
Nontaxable/nondeductible items	1.30%	1.20%	2.00%
Changes in valuation allowance	0.00%	0.20%	0.10%
Adjustment for uncertain tax positions	0.00%	0.00%	0.00%
Other, net	0.00%	0.00%	(0.10%)
Tax credits	(0.10%)	(0.10%)	(0.20%)
Income tax expense	26.20%	26.10%	26.70%