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Income Taxes - Summary of Differences in Taxes from Continuing Operations Computed at Statutory Rate (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Provision at statutory rate	$ 32,082	$ 39,484
Tax-exempt income:
Tax-exempt interest	(4,958)	(4,486)
Section 291/265 interest disallowance	885	386
Company-owned life insurance income	(694)	(627)
Tax-exempt income	(4,767)	(4,727)
State income taxes	5,147	8,142
Interim period effective rate adjustment	944	(1,717)
Tax credit investments - federal	(3,055)	(2,526)
Officer compensation limitation	765	1,040
Non-deductible FDIC premiums	1,747	2,110
Other, net	(375)	(385)
Income tax expense	$ 32,488	$ 41,421
Effective tax rate	21.30%	22.00%

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