Income Taxes - Significant Components of The Company's Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Deferred tax assets
Allowance for credit losses	$ 53,963	$ 53,432
Loans	1,437	1,631
Deferred compensation	12,192	15,310
Net unrealized losses on securities	52,103	51,211
Impairment of assets	284	138
Tax credits	4,711	4,035
Net operating loss carryforwards	4	33
Investment in partnerships	1,637	1,491
Lease liabilities under operating leases	12,974	13,066
Realized losses on securities	48	4,892
Other	2,748	2,660
Total deferred tax assets	142,101	147,899
Deferred tax liabilities
Fixed assets	11,022	11,023
Mortgage servicing rights	16,367	21,282
Junior subordinated debt	1,647	1,708
Intangibles	2,371	2,447
Lease right-of-use asset	12,322	12,399
Other	3,490	3,344
Total deferred tax liabilities	47,219	52,203
Net deferred tax assets	$ 94,882	$ 95,696