Income Taxes - Tax Effects of Temporary Differences Related to Deferred Taxes Included in Other Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Deferred tax assets:
Loans acquired	$ 4,162	$ 5,846
Allowance for credit losses	47,042	47,145
Valuation of foreclosed assets	523	523
Tax NOLs from acquisition	9,688	10,962
Deferred compensation payable	3,569	3,867
Accrued equity and other compensation	8,065	8,153
Acquired securities	7,522	7,651
Right-of-use lease liability	15,496	11,641
Unrealized loss on AFS securities	193,398	177,839
Allowance for unfunded commitments	6,235	10,200
Other	5,886	4,173
Gross deferred tax assets	301,586	288,000
Deferred tax liabilities:
Goodwill and other intangible amortization	(42,438)	(44,539)
Accumulated depreciation	(23,415)	(24,288)
Right-of-use lease asset	(15,170)	(11,396)
Unrealized gain on swaps	(35,230)	(25,836)
Other	(10,304)	(8,875)
Gross deferred tax liabilities	(126,557)	(114,934)
Net deferred tax asset	$ 175,029	$ 173,066