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Note 4 - Loans and the Allowance for Credit Losses - Allocation of the Allowance for Credit Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Loans, Balance |  |  | $ 13,196 |  |
Charge-offs |  |  | (730) |  | $ (2,039)
Loans, Balance | $ 19,564 |  | 19,564 |  | 13,196
Loans, Net of Unfunded Commitments [Member] |  |  |  |  |
Loans, Balance | 14,209 | $ 14,082 | 13,196 | $ 12,867 | 12,867
Charge-offs | (224) | (412) | (730) | (1,422) |
Recoveries | 141 | 286 | 511 | 686 |
Initial allowance on acquired PCD loans | 315 |  | 315 |  |
Provision for (recovery of) credit losses | 5,123 | (350) | 6,272 | 1,475 |
Loans, Balance | 19,564 | 13,606 | 19,564 | 13,606 | 13,196
Commercial Portfolio Segment [Member] | Commercial Loans [Member] |  |  |  |  |
Loans, Balance | 1,397 | 1,426 | 1,265 | 1,134 | 1,134
Charge-offs | (25) | 0 | (190) | (65) | (302)
Recoveries | 11 | 6 | 22 | 21 |
Initial allowance on acquired PCD loans | 58 |  | 58 |  |
Provision for (recovery of) credit losses | 1,035 | (73) | 1,321 | 269 |
Loans, Balance | 2,476 | 1,359 | 2,476 | 1,359 | 1,265
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] |  |  |  |  |
Loans, Balance | 2,657 | 1,780 | 1,802 | 1,738 | 1,738
Charge-offs | 0 | 0 | (11) | 0 | 0
Recoveries | 0 | 0 | 0 | 0 |
Initial allowance on acquired PCD loans | 31 |  | 31 |  |
Provision for (recovery of) credit losses | 568 | (10) | 1,434 | 32 |
Loans, Balance | 3,256 | 1,770 | 3,256 | 1,770 | 1,802
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] |  |  |  |  |
Loans, Balance | 7,742 | 7,581 | 7,459 | 6,678 | 6,678
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 |
Initial allowance on acquired PCD loans | 226 |  | 226 |  |
Provision for (recovery of) credit losses | 3,111 | (73) | 3,394 | 830 |
Loans, Balance | 11,079 | 7,508 | 11,079 | 7,508 | 7,459
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |  |
Loans, Balance | 694 | 973 | 815 | 797 | 797
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 |
Initial allowance on acquired PCD loans | 0 |  | 0 |  |
Provision for (recovery of) credit losses | 32 | (125) | (89) | 51 |
Loans, Balance | 726 | 848 | 726 | 848 | 815
Residential Portfolio Segment [Member] | Real Estate Loan [Member] |  |  |  |  |
Loans, Balance | 110 | 121 | 102 | 137 | 137
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 47 | 1 | 49 | 3 |
Initial allowance on acquired PCD loans | 0 |  | 0 |  |
Provision for (recovery of) credit losses | 108 | (12) | 114 | (30) |
Loans, Balance | 265 | 110 | 265 | 110 | 102
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] |  |  |  |  |
Loans, Balance | 562 | 458 | 460 | 439 | 439
Charge-offs | (19) | 0 | (19) | 0 | 0
Recoveries | 0 | 0 | 0 | 0 |
Initial allowance on acquired PCD loans | 0 |  | 0 |  |
Provision for (recovery of) credit losses | 57 | (2) | 159 | 17 |
Loans, Balance | 600 | 456 | 600 | 456 | 460
Consumer Portfolio Segment [Member] | Automobile Loan [Member] |  |  |  |  |
Loans, Balance | 955 | 1,654 | 1,215 | 1,865 | 1,865
Charge-offs | (157) | (396) | (408) | (1,292) | (1,643)
Recoveries | 80 | 266 | 430 | 642 |
Initial allowance on acquired PCD loans | 0 |  | 0 |  |
Provision for (recovery of) credit losses | (39) | (56) | (398) | 253 |
Loans, Balance | 839 | 1,468 | 839 | 1,468 | 1,215
Consumer Portfolio Segment [Member] | Other Loans [Member] |  |  |  |  |
Loans, Balance | 92 | 89 | 78 | 79 | 79
Charge-offs | (23) | (16) | (102) | (65) | (94)
Recoveries | 3 | 13 | 10 | 20 |
Initial allowance on acquired PCD loans | 0 |  | 0 |  |
Provision for (recovery of) credit losses | 251 | 1 | 337 | 53 |
Loans, Balance | $ 323 | $ 87 | $ 323 | $ 87 | $ 78

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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