Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets
Allowance for credit losses	$ 52,551	$ 50,712
Loans	2,518	2,855
Deferred compensation	14,447	14,522
Net unrealized losses on securities	70,999	3,545
Impairment of assets	316	392
Net operating loss carryforwards	497	1,211
Investments in partnerships	1,164	890
Lease liabilities under operating leases	14,641	17,106
Other	3,523	3,241
Total deferred tax assets	160,656	94,474
Deferred tax liabilities
Fixed assets	10,342	5,339
Mortgage servicing rights	19,624	20,779
Junior subordinated debt	1,948	2,130
Intangibles	2,702	3,177
Lease right-of-use asset	14,018	16,209
Other	1,614	1,607
Total deferred tax liabilities	50,248	49,241
Net deferred tax assets	$ 110,408	$ 45,233