Income Taxes - Tax Effects of Temporary Differences Related to Deferred Taxes Included in Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Loans acquired	$ 4,832	$ 10,100
Allowance for credit losses	48,462	58,028
Valuation of foreclosed assets	628	1,673
Tax NOLs from acquisition	13,537	16,028
Deferred compensation payable	3,426	3,060
Accrued equity and other compensation	5,776	5,905
Acquired securities	223	587
Right-of-use lease liability	11,984	7,835
Unrealized loss on available-for-sale securities	8,164	0
Allowance for unfunded commitments	5,442	5,583
Other	7,202	7,600
Gross deferred tax assets	109,676	116,399
Deferred tax liabilities:
Goodwill and other intangible amortization	(38,329)	(38,882)
Accumulated depreciation	(26,347)	(34,667)
Right-of-use lease asset	(11,871)	(7,813)
Unrealized gain on available-for-sale securities	0	(17,521)
Unrealized gain on swaps	(2,767)	0
Other	(3,718)	(4,021)
Gross deferred tax liabilities	(83,032)	(102,904)
Net deferred tax asset	$ 26,644	$ 13,495