Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Assets
Securities, available for sale	$ 890,758	$ 676,592
Securities, held for maturity	265,294	268,094
Carrying Amount
Assets
Cash and due from banks	781,030	845,150
Federal funds sold	546	551
Securities, available for sale	890,758	676,592
Securities, held for maturity	323,203	322,675
Loans held for sale	0
Loans, net	1,730,911	2,029,047
Accrued interest receivable	11,875	12,455
Liabilities
Deposits	3,457,052	3,632,877
Repurchase agreements	7,227	7,119
Accrued interest payable	17,492	17,637
Long-term advances from Federal Home Loan Bank	135,000	135,000
Senior long-term debt	14,214	14,203
Junior subordinated debentures	29,835	29,805
Fair Value Measurements
Assets
Cash and due from banks	781,030	845,150
Federal funds sold	546	551
Securities, available for sale	890,758	676,592
Securities, held for maturity	265,294	268,094
Loans held for sale	0
Loans, net	1,728,208	2,025,685
Accrued interest receivable	11,875	12,455
Liabilities
Deposits	3,450,617	3,643,821
Repurchase agreements	7,201	7,160
Accrued interest payable	17,492	17,637
Long-term advances from Federal Home Loan Bank	135,194	136,529
Senior long-term debt	14,265	14,266
Junior subordinated debentures	30,000	30,000
Fair Value Measurements \| Level 1
Assets
Cash and due from banks	781,030	845,150
Federal funds sold	546	551
Securities, available for sale	49,507	98,149
Securities, held for maturity	0	0
Loans held for sale	0
Loans, net	0	0
Accrued interest receivable	0	0
Liabilities
Deposits	0	0
Repurchase agreements	0	0
Accrued interest payable	0	0
Long-term advances from Federal Home Loan Bank	0	0
Senior long-term debt	0	0
Junior subordinated debentures	0	0
Fair Value Measurements \| Level 2
Assets
Cash and due from banks	0	0
Federal funds sold	0	0
Securities, available for sale	825,490	555,565
Securities, held for maturity	265,294	268,094
Loans held for sale	0
Loans, net	0	0
Accrued interest receivable	0	0
Liabilities
Deposits	0	0
Repurchase agreements	0	0
Accrued interest payable	0	0
Long-term advances from Federal Home Loan Bank	0	0
Senior long-term debt	0	0
Junior subordinated debentures	0	0
Fair Value Measurements \| Level 3
Assets
Cash and due from banks	0	0
Federal funds sold	0	0
Securities, available for sale	15,761	22,878
Securities, held for maturity	0	0
Loans held for sale	0
Loans, net	1,728,208	2,025,685
Accrued interest receivable	11,875	12,455
Liabilities
Deposits	3,450,617	3,643,821
Repurchase agreements	7,201	7,160
Accrued interest payable	17,492	17,637
Long-term advances from Federal Home Loan Bank	135,194	136,529
Senior long-term debt	14,265	14,266
Junior subordinated debentures	$ 30,000	$ 30,000

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