Income Taxes - Summary of Differences in Taxes from Continuing Operations Computed at Statutory Rate (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Statutory rate	21.00%
Provision at statutory rate of 21%	$ (7,623)	$ 21,934
Tax-exempt income:
Tax-exempt interest	(2,992)	(2,779)
Section 291/265 interest disallowance	28	33
Company-owned life insurance income	(718)	(544)
Tax-exempt income	(3,682)	(3,290)
State income taxes	(3,327)	2,974
Interim period effective rate adjustment	7,040	(1,775)
Tax credit investments - federal	(1,270)	(1,092)
Other, net	148	(1,121)
Income tax expense (benefit)	$ (8,714)	$ 17,630
Effective tax rate	24.00%	16.90%

Effective Income Tax Rate Reconciliation, Tax Exempt Income, Life Insurance, Amount

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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