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Note 4 - Loans and Allowance for Credit Losses - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | $ 14,803,000 | $ 16,535,000 | $ 14,519,000 | $ 15,885,000 | $ 15,885,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Charge-offs | (600,000) | (217,000) | (740,000) | (233,000) | (1,172,000)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery | 42,000 | 4,000 | 66,000 | 70,000 |
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) | 550,000 | (200,000) | 950,000 | 400,000 |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 14,795,000 | 16,122,000 | 14,795,000 | 16,122,000 | 14,519,000
Reserve for unfunded commitments | 1,150,000 |  | 1,150,000 |  |
Total | 15,903,000 | 17,485,000 | 15,719,000 | 16,585,000 | 16,585,000
Total, Charge-offs | (600,000) | (217,000) | (740,000) | (233,000) |
Total, Recovery | 42,000 | 4,000 | 66,000 | 70,000 |
Provision for credit losses | 600,000 | 0 | 900,000 | 850,000 |
Total | 15,945,000 | 17,272,000 | 15,945,000 | 17,272,000 | 15,719,000
Unfunded Loan Commitment [Member] |  |  |  |  |
Reserve for unfunded commitments | 1,100,000 | 950,000 | 1,200,000 | 700,000 | 700,000
Reserve for unfunded commitments, Charge-offs | 0 | 0 | 0 | 0 |
Reserve for unfunded commitments, Recovery | 0 | 0 | 0 | 0 |
Reserve for unfunded commitments, Credit Loss Expense (Reversal) | 50,000 | 200,000 | (50,000) | 450,000 |
Reserve for unfunded commitments | 1,150,000 | 1,150,000 | 1,150,000 | 1,150,000 | 1,200,000
Commercial Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 2,608,000 | 2,064,000 | 2,425,000 | 1,622,000 | 1,622,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Charge-offs | (584,000) | (185,000) | (723,000) | (195,000) | (648,000)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery | 11,000 | 2,000 | 14,000 | 67,000 | 273,000
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) | 635,000 | 642,000 | 954,000 | 1,029,000 |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 2,670,000 | 2,523,000 | 2,670,000 | 2,523,000 | 2,425,000
Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 9,185,000 | 8,871,000 | 9,343,000 | 10,245,000 | 10,245,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Charge-offs | 0 | (26,000) | 0 | (26,000) | (26,000)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery | 0 | 0 | 0 | 0 | 0
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) | (63,000) | 937,000 | (221,000) | (437,000) |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 9,122,000 | 9,782,000 | 9,122,000 | 9,782,000 | 9,343,000
Agricultural Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 1,149,000 | 3,932,000 | 1,074,000 | 1,555,000 | 1,555,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Charge-offs | 0 | 0 | 0 | 0 | (474,000)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery | 30,000 | 0 | 50,000 | 0 | 0
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) | (59,000) | (1,949,000) | (4,000) | 428,000 |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 1,120,000 | 1,983,000 | 1,120,000 | 1,983,000 | 1,074,000
Residential Mortgage [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 1,212,000 | 980,000 | 1,005,000 | 1,779,000 | 1,779,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Charge-offs | 0 | (5,000) | 0 | (5,000) | (5,000)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery | 0 | 0 | 0 | 0 | 0
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) | 8,000 | 63,000 | 215,000 | (736,000) |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 1,220,000 | 1,038,000 | 1,220,000 | 1,038,000 | 1,005,000
Residential Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 364,000 | 407,000 | 376,000 | 433,000 | 433,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Charge-offs | 0 | 0 | 0 | 0 | 0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery | 0 | 0 | 0 | 0 | 0
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) | (11,000) | 92,000 | (23,000) | 66,000 |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 353,000 | 499,000 | 353,000 | 499,000 | 376,000
Consumer Portfolio Segment [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 285,000 | 281,000 | 296,000 | 251,000 | 251,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Charge-offs | (16,000) | (1,000) | (17,000) | (7,000) | (19,000)
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery | 1,000 | 2,000 | 2,000 | 3,000 | 33,000
Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) | 40,000 | 15,000 | 29,000 | 50,000 |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | $ 310,000 | $ 297,000 | $ 310,000 | $ 297,000 | $ 296,000

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