Income Taxes - Significant Components of The Company's Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Deferred tax assets
Allowance for credit losses	$ 52,475	$ 52,551
Loans	2,173	2,518
Deferred compensation	12,449	14,447
Net unrealized losses on securities	63,874	70,999
Impairment of assets	220	316
Net operating loss carryforwards	151	497
Investment in partnerships	1,366	1,164
Lease liabilities under operating leases	14,004	14,641
Other	5,897	3,523
Total deferred tax assets	152,609	160,656
Deferred tax liabilities
Fixed assets	10,340	10,342
Mortgage servicing rights	20,386	19,624
Junior subordinated debt	1,827	1,948
Intangibles	2,539	2,702
Lease right-of-use asset	13,363	14,018
Other	1,173	1,614
Total deferred tax liabilities	49,628	50,248
Net deferred tax assets	$ 102,981	$ 110,408