CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Assets
Cash and due from financial institutions	$ 116,181,000	$ 97,150,000
Interest-bearing deposits in other financial institutions	406,256,000	14,894,000
Investment securities:
Debt securities available-for-sale, at fair value	647,210,000	671,794,000
Held-to-maturity debt securities, fair value of: $565,178 at December 31, 2023 and $596,780 at December 31, 2022	632,338,000	664,883,000
Total investment securities	1,279,548,000	1,336,677,000
Loans held for sale	1,778,000	1,105,000
Loans	5,438,982,000	5,555,466,000
Allowance for credit losses	63,934,000	63,738,000
Loans, net of allowance for credit losses	5,375,048,000	5,491,728,000
Premises and equipment, net	96,184,000	91,634,000
Accrued interest receivable	21,511,000	20,345,000
Investment in unconsolidated entities	41,546,000	46,641,000
Mortgage servicing rights, net	8,696,000	9,074,000
Bank-owned life insurance	170,706,000	167,967,000
Federal Home Loan Bank of Des Moines ("FHLB") stock	6,793,000	9,146,000
Right-of-use lease asset	29,720,000	34,985,000
Other assets	88,829,000	111,417,000
Total assets	7,642,796,000	7,432,763,000
Deposits:
Noninterest-bearing demand	1,913,379,000	2,092,823,000
Interest-bearing demand	1,329,189,000	1,453,167,000
Savings and money market	2,209,733,000	2,199,028,000
Time	1,395,291,000	991,205,000
Total deposits	6,847,592,000	6,736,223,000
FHLB advances and other short-term borrowings	0	5,000,000
Long-term debt, net of unamortized debt issuance costs of $445 at December 31, 2023 and $688 at December 31, 2022	156,102,000	105,859,000
Lease liability	30,634,000	35,889,000
Accrued interest payable	18,948,000	4,739,000
Other liabilities	85,705,000	92,182,000
Total liabilities	7,138,981,000	6,979,892,000
Contingent liabilities and other commitments (see Note 19)
Equity:
Preferred stock, no par value, authorized 1,000,000 shares; issued and outstanding none at: December 31, 2023, and December 31, 2022	0	0
Common stock, no par value, authorized 185,000,000 shares; issued and outstanding 27,045,033 and 27,025,070 shares at December 31, 2023 and 2022, respectively	405,439,000	408,071,000
Additional paid-in capital	102,982,000	101,346,000
Retained earnings	117,990,000	87,438,000
Accumulated other comprehensive loss	(122,596,000)	(143,984,000)
Total shareholders' equity	503,815,000	452,871,000
Total liabilities and equity	$ 7,642,796,000	$ 7,432,763,000