Income Taxes - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income tax expense at statutory federal income tax rate	$ 146,194	$ 202,477	$ 207,765
State income tax expense, net of federal income tax benefit	28,415	21,981	38,452
Tax credits and related benefits, net of amortization (as applicable)	(21,037)	(9,629)	(8,717)
Income not subject to tax	(10,477)	(9,346)	(10,455)
FDIC premiums	8,589	5,517	4,111
Executive compensation	3,575	2,152	1,096
Excess tax benefit from share-based compensation	(1,416)	(3,153)	(3,084)
Other, net	178	(3,724)	(275)
Total income tax expense	$ 154,021	$ 206,275	$ 228,893
Effective tax rate	22.10%	21.40%	23.10%