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Note 6 - Loans Receivable and Credit Disclosures - Activity in Allowance for Loan 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
Balance | $ 16,971 |  | $ 17,203 |  | $ 17,058 |  | $ 16,776 |  | $ 16,776
Credit loss expense (benefit) 1 | 635 | [1] | 369 | [1] | 1,704 | [2] | 792 | [1] |
Recoveries of loans charged-off | 351 |  | 3 |  | 356 |  | 10 |  |
Loans charged-off | (7) |  | (13) |  | (1,168) |  | (16) |  | (483)
Balance | 17,950 |  | 17,562 |  | 17,950 |  | 17,562 |  | 17,058
Construction Real Estate [Member] |  |  |  |  |  |  |  |  |
Balance | 481 |  | 413 |  | 482 |  | 408 |  | 408
Credit loss expense (benefit) 1 | 11 | [1] | 151 | [1] | 53 | [2] | 156 | [1] |
Recoveries of loans charged-off | 0 |  | 0 |  | 1 |  | 0 |  |
Loans charged-off | 0 |  | 0 |  | (44) |  | 0 |  | 0
Balance | 492 |  | 564 |  | 492 |  | 564 |  | 482
Family Residential Real Estate 1-4 [Member] |  |  |  |  |  |  |  |  |
Balance | 3,880 |  | 3,349 |  | 3,890 |  | 3,333 |  | 3,333
Credit loss expense (benefit) 1 | 226 | [1] | 400 | [1] | 218 | [2] | 414 | [1] |
Recoveries of loans charged-off | 0 |  | 1 |  | 0 |  | 3 |  |
Loans charged-off | 0 |  | 0 |  | (2) |  | 0 |  | 0
Balance | 4,106 |  | 3,750 |  | 4,106 |  | 3,750 |  | 3,890
Multifamily [Member] |  |  |  |  |  |  |  |  |
Balance | 2,221 |  | 2,584 |  | 2,188 |  | 2,542 |  | 2,542
Credit loss expense (benefit) 1 | 45 | [1] | (373) | [1] | 78 | [2] | (331) | [1] |
Recoveries of loans charged-off | 0 |  | 0 |  | 0 |  | 0 |  |
Loans charged-off | 0 |  | 0 |  | 0 |  | 0 |  | 0
Balance | 2,266 |  | 2,211 |  | 2,266 |  | 2,211 |  | 2,188
Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |  |  |  |  |
Balance | 4,508 |  | 5,530 |  | 4,932 |  | 5,236 |  | 5,236
Credit loss expense (benefit) 1 | 747 | [1] | (521) | [1] | 323 | [2] | (227) | [1] |
Recoveries of loans charged-off | 0 |  | 0 |  | 0 |  | 0 |  |
Loans charged-off | 0 |  | 0 |  | 0 |  | 0 |  | 0
Balance | 5,255 |  | 5,009 |  | 5,255 |  | 5,009 |  | 4,932
Agriculture Real Estate [Member] |  |  |  |  |  |  |  |  |
Balance | 1,573 |  | 1,226 |  | 1,584 |  | 1,238 |  | 1,238
Credit loss expense (benefit) 1 | (10) | [1] | 333 | [1] | (21) | [2] | 321 | [1] |
Recoveries of loans charged-off | 0 |  | 0 |  | 0 |  | 0 |  |
Loans charged-off | 0 |  | 0 |  | 0 |  | 0 |  | 0
Balance | 1,563 |  | 1,559 |  | 1,563 |  | 1,559 |  | 1,584
Commercial Portfolio Segment [Member] |  |  |  |  |  |  |  |  |
Balance | 1,888 |  | 1,912 |  | 1,759 |  | 1,955 |  | 1,955
Credit loss expense (benefit) 1 | (147) | [1] | 413 | [1] | 1,093 | [2] | 371 | [1] |
Recoveries of loans charged-off | 351 |  | 2 |  | 354 |  | 4 |  |
Loans charged-off | (7) |  | (4) |  | (1,121) |  | (7) |  | (474)
Balance | 2,085 |  | 2,323 |  | 2,085 |  | 2,323 |  | 1,759
Agriculture [Member] |  |  |  |  |  |  |  |  |
Balance | 1,991 |  | 1,710 |  | 1,805 |  | 1,607 |  | 1,607
Credit loss expense (benefit) 1 | (182) | [1] | 5 | [1] | 4 | [2] | 108 | [1] |
Recoveries of loans charged-off | 0 |  | 0 |  | 0 |  | 0 |  |
Loans charged-off | 0 |  | 0 |  | 0 |  | 0 |  | 0
Balance | 1,809 |  | 1,715 |  | 1,809 |  | 1,715 |  | 1,805
Consumer and Other [Member] |  |  |  |  |  |  |  |  |
Balance | 429 |  | 479 |  | 418 |  | 457 |  | 457
Credit loss expense (benefit) 1 | (55) | [1] | (39) | [1] | (44) | [2] | (20) | [1] |
Recoveries of loans charged-off | 0 |  | 0 |  | 1 |  | 3 |  |
Loans charged-off | 0 |  | (9) |  | (1) |  | (9) |  | (9)
Balance | $ 374 |  | $ 431 |  | $ 374 |  | $ 431 |  | $ 418
[1] | The difference in the credit loss expense reported herein as compared to the Consolidated Statements of Income is associated with the credit loss benefit of $70 thousand related to off-balance sheet credit exposures.
[2] | The difference in the credit loss expense reported herein as compared to the Consolidated Statements of Income is associated with the credit loss benefit of $7 thousand related to off-balance sheet credit exposures.

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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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