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Note 7 - Loans Receivable and Credit Disclosures - Amortized Cost Basis of Collateral Dependent Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
Collateral dependent loans | $ 11,443 | $ 14,386 |  |
Collateral dependent loans, ACL | 16,269 | 15,697 | $ 16,484 | $ 16,621
Construction Real Estate [Member] |  |  |  |
Collateral dependent loans | 0 | 0 |  |
Collateral dependent loans, ACL | 391 | 730 | 645 | 675
Family Residential Real Estate 1-4 [Member] |  |  |  |
Collateral dependent loans | 817 | 805 |  |
Collateral dependent loans, ACL | 3,288 | 3,028 | 2,899 | 2,752
Multifamily [Member] |  |  |  |
Collateral dependent loans | 0 | 0 |  |
Collateral dependent loans, ACL | 2,568 | 2,493 | 2,433 | 2,501
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Collateral dependent loans | 9,176 | 12,853 |  |
Collateral dependent loans, ACL | 5,206 | 4,742 | 5,881 | 5,905
Agriculture Real Estate [Member] |  |  |  |
Collateral dependent loans | 494 | 165 |  |
Collateral dependent loans, ACL | 1,218 | 1,625 | 1,630 | 1,584
Commercial Portfolio Segment [Member] |  |  |  |
Collateral dependent loans | 188 | 200 |  |
Collateral dependent loans, ACL | 1,784 | 1,153 | 1,152 | 1,170
Agriculture [Member] |  |  |  |
Collateral dependent loans | 752 | 342 |  |
Collateral dependent loans, ACL | 1,392 | 1,705 | 1,606 | 1,836
Consumer and Other [Member] |  |  |  |
Collateral dependent loans | 16 | 21 |  |
Collateral dependent loans, ACL | 422 | $ 221 | $ 238 | $ 198
Real Estate [Member] |  |  |  |
Collateral dependent loans | 10,875 |  |  |
Real Estate [Member] | Construction Real Estate [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Real Estate [Member] | Family Residential Real Estate 1-4 [Member] |  |  |  |
Collateral dependent loans | 817 |  |  |
Real Estate [Member] | Multifamily [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Collateral dependent loans | 9,176 |  |  |
Real Estate [Member] | Agriculture Real Estate [Member] |  |  |  |
Collateral dependent loans | 494 |  |  |
Real Estate [Member] | Commercial Portfolio Segment [Member] |  |  |  |
Collateral dependent loans | 128 |  |  |
Real Estate [Member] | Agriculture [Member] |  |  |  |
Collateral dependent loans | 260 |  |  |
Real Estate [Member] | Consumer and Other [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Equipment [Member] |  |  |  |
Collateral dependent loans | 45 |  |  |
Equipment [Member] | Construction Real Estate [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Equipment [Member] | Family Residential Real Estate 1-4 [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Equipment [Member] | Multifamily [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Equipment [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Equipment [Member] | Agriculture Real Estate [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Equipment [Member] | Commercial Portfolio Segment [Member] |  |  |  |
Collateral dependent loans | 3 |  |  |
Equipment [Member] | Agriculture [Member] |  |  |  |
Collateral dependent loans | 42 |  |  |
Equipment [Member] | Consumer and Other [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Other [Member] |  |  |  |
Collateral dependent loans | 450 |  |  |
Other [Member] | Construction Real Estate [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Other [Member] | Family Residential Real Estate 1-4 [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Other [Member] | Multifamily [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Other [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Other [Member] | Agriculture Real Estate [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Other [Member] | Commercial Portfolio Segment [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Other [Member] | Agriculture [Member] |  |  |  |
Collateral dependent loans | 450 |  |  |
Collateral Pledged [Member] |  |  |  |
Collateral dependent loans | 11,370 |  |  |
Collateral dependent loans, ACL | 103 |  |  |
Collateral Pledged [Member] | Construction Real Estate [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Collateral dependent loans, ACL | 0 |  |  |
Collateral Pledged [Member] | Family Residential Real Estate 1-4 [Member] |  |  |  |
Collateral dependent loans | 817 |  |  |
Collateral dependent loans, ACL | 22 |  |  |
Collateral Pledged [Member] | Multifamily [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Collateral dependent loans, ACL | 0 |  |  |
Collateral Pledged [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Collateral dependent loans | 9,176 |  |  |
Collateral dependent loans, ACL | 0 |  |  |
Collateral Pledged [Member] | Agriculture Real Estate [Member] |  |  |  |
Collateral dependent loans | 494 |  |  |
Collateral dependent loans, ACL | 0 |  |  |
Collateral Pledged [Member] | Commercial Portfolio Segment [Member] |  |  |  |
Collateral dependent loans | 131 |  |  |
Collateral dependent loans, ACL | 0 |  |  |
Collateral Pledged [Member] | Agriculture [Member] |  |  |  |
Collateral dependent loans | 752 |  |  |
Collateral dependent loans, ACL | 81 |  |  |
Collateral Pledged [Member] | Consumer and Other [Member] |  |  |  |
Collateral dependent loans | 0 |  |  |
Collateral dependent loans, ACL | $ 0 |  |  |

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