Income Taxes - Tax Effects of Temporary Differences Related to Deferred Taxes Included in Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Loans acquired	$ 3,378	$ 3,644
Allowance for credit losses	54,042	53,445
Valuation of foreclosed assets	480	480
Tax NOLs from acquisition	9,899	9,643
Deferred compensation payable	3,385	3,355
Accrued equity and other compensation	6,040	8,048
Acquired securities	7,570	7,569
Right-of-use lease liability	17,422	16,501
Unrealized loss on AFS securities	147,642	143,624
Allowance for unfunded commitments	6,148	6,148
Other	8,185	7,627
Gross deferred tax assets	264,191	260,084
Deferred tax liabilities:
Goodwill and other intangible amortization	(40,538)	(41,174)
Accumulated depreciation	(24,748)	(24,632)
Right-of-use lease asset	(17,004)	(16,136)
Unrealized gain on swaps	(29,017)	(25,371)
Other	(11,116)	(10,995)
Gross deferred tax liabilities	(122,423)	(118,308)
Net deferred tax asset	$ 141,768	$ 141,776