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Income Taxes - Summary of Differences in Taxes from Continuing Operations Computed at Statutory Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Provision at statutory rate of 21%	$ 142,892	$ 157,774	$ 114,394
Tax-exempt income:
Tax-exempt interest	(19,439)	(18,582)	(14,588)
Section 291/265 interest disallowance	3,620	2,392	363
Company-owned life insurance income	(4,428)	(3,125)	(2,891)
Tax-exempt income	(20,247)	(19,315)	(17,116)
State income taxes	19,619	31,164	20,837
Tax credit investments - federal	(14,829)	(12,190)	(9,140)
Officer compensation limitation	4,154	4,685	5,903
Non-deductible FDIC premiums	8,754	7,912	3,805
Other, net	907	(720)	(2,237)
Income tax expense	$ 141,250	$ 169,310	$ 116,446
Effective tax rate	20.80%	22.50%	21.40%

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