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Note 5 - Loans - Loans Modified During Period (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Percentage of total loans |  | 0.46% | 0.23% | 0.64% | 0.38%
Extended Maturity [Member] |  |  |  |  |
Modified Amortized Cost |  | $ 44,739 | $ 25,643 | $ 64,217 | $ 43,910
Payment Deferral [Member] |  |  |  |  |
Modified Amortized Cost |  | 11,355 | 303 | 13,690 | 303
Extended Maturity and Payment Deferral [Member] |  |  |  |  |
Modified Amortized Cost |  | 56,094 | 25,946 | 77,907 | 44,213
Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |
Total payment deferral |  | $ 1,278 | $ 0 | $ 1,403 | $ 0
Percentage of total loans |  | 0.43% | 0.22% | 0.49% | 0.26%
Commercial Real Estate Portfolio Segment [Member] | One to Four Family [Member] |  |  |  |  |
Total payment deferral |  |  |  |  | $ 0
Commercial Real Estate Portfolio Segment [Member] | Minimum [Member] |  |  |  |  |
Term extensions (Month) | 2 months | 3 months | 1 year |  | 1 month
Commercial Real Estate Portfolio Segment [Member] | Maximum [Member] |  |  |  |  |
Term extensions (Month) |  | 95 months | 12 years | 95 months | 65 months
Commercial Real Estate Portfolio Segment [Member] | Extended Maturity [Member] |  |  |  |  |
Modified Amortized Cost |  | $ 41,486 | $ 25,340 | $ 48,448 | $ 30,264
Commercial Real Estate Portfolio Segment [Member] | Payment Deferral [Member] |  |  |  |  |
Modified Amortized Cost |  | 11,355 | 0 | 12,363 | 0
Commercial Real Estate Portfolio Segment [Member] | Extended Maturity and Payment Deferral [Member] |  |  |  |  |
Modified Amortized Cost |  | 52,841 | 25,340 | $ 60,811 | 30,264
Real Estate Portfolio Segment[Member] | Construction Loans [Member] |  |  |  |  |
Term extensions (Month) |  |  |  | 12 months |
Total payment deferral |  | 0 | 0 | $ 0 | 0
Percentage of total loans |  |  |  | 0.01% |
Real Estate Portfolio Segment[Member] | Other Mortgages [Member] |  |  |  |  |
Term extensions (Month) |  |  |  | 11 months |
Total payment deferral |  | 0 | $ 0 | $ 0 | $ 59
Percentage of total loans |  |  | 0.01% | 0.08% | 0.10%
Real Estate Portfolio Segment[Member] | Owner Occupied Commercial [Member] |  |  |  |  |
Total payment deferral |  | $ 0 | $ 0 | $ 16 | $ 49
Percentage of total loans |  | 0.03% |  | 0.05% | 0.02%
Real Estate Portfolio Segment[Member] | One to Four Family [Member] |  |  |  |  |
Term extensions (Month) |  | 6 months |  |  |
Total payment deferral |  | $ 0 | $ 0 | $ 2 |
Percentage of total loans |  | 0.00% |  | 0.01% |
Real Estate Portfolio Segment[Member] | Minimum [Member] | Other Mortgages [Member] |  |  |  |  |
Term extensions (Month) |  |  | 2 years |  | 2 months
Real Estate Portfolio Segment[Member] | Minimum [Member] | Owner Occupied Commercial [Member] |  |  |  |  |
Term extensions (Month) | 4 months | 4 months |  |  | 3 months
Real Estate Portfolio Segment[Member] | Minimum [Member] | One to Four Family [Member] |  |  |  |  |
Term extensions (Month) | 6 months |  |  |  |
Real Estate Portfolio Segment[Member] | Maximum [Member] | Other Mortgages [Member] |  |  |  |  |
Term extensions (Month) |  |  | 3 years |  | 36 months
Real Estate Portfolio Segment[Member] | Maximum [Member] | Owner Occupied Commercial [Member] |  |  |  |  |
Term extensions (Month) |  | 5 months |  | 60 months | 60 months
Real Estate Portfolio Segment[Member] | Maximum [Member] | One to Four Family [Member] |  |  |  |  |
Term extensions (Month) |  |  |  | 121 months |
Real Estate Portfolio Segment[Member] | Extended Maturity [Member] | Construction Loans [Member] |  |  |  |  |
Modified Amortized Cost |  |  |  | $ 967 |
Real Estate Portfolio Segment[Member] | Extended Maturity [Member] | Other Mortgages [Member] |  |  |  |  |
Modified Amortized Cost |  |  | $ 303 | 9,681 | $ 11,236
Real Estate Portfolio Segment[Member] | Extended Maturity [Member] | Owner Occupied Commercial [Member] |  |  |  |  |
Modified Amortized Cost |  | $ 3,138 |  | 4,595 | 2,410
Real Estate Portfolio Segment[Member] | Extended Maturity [Member] | One to Four Family [Member] |  |  |  |  |
Modified Amortized Cost |  | 115 |  | 526 |
Real Estate Portfolio Segment[Member] | Payment Deferral [Member] | Construction Loans [Member] |  |  |  |  |
Modified Amortized Cost |  |  |  | 0 |
Real Estate Portfolio Segment[Member] | Payment Deferral [Member] | Other Mortgages [Member] |  |  |  |  |
Modified Amortized Cost |  |  | 303 | 0 | 303
Real Estate Portfolio Segment[Member] | Payment Deferral [Member] | Owner Occupied Commercial [Member] |  |  |  |  |
Modified Amortized Cost |  | 0 |  | 1,155 | 0
Real Estate Portfolio Segment[Member] | Payment Deferral [Member] | One to Four Family [Member] |  |  |  |  |
Modified Amortized Cost |  | 0 |  | 172 |
Real Estate Portfolio Segment[Member] | Extended Maturity and Payment Deferral [Member] | Construction Loans [Member] |  |  |  |  |
Modified Amortized Cost |  |  |  | 967 |
Real Estate Portfolio Segment[Member] | Extended Maturity and Payment Deferral [Member] | Other Mortgages [Member] |  |  |  |  |
Modified Amortized Cost |  |  | $ 606 | 9,681 | 11,539
Real Estate Portfolio Segment[Member] | Extended Maturity and Payment Deferral [Member] | Owner Occupied Commercial [Member] |  |  |  |  |
Modified Amortized Cost |  | 3,138 |  | 5,750 | $ 2,410
Real Estate Portfolio Segment[Member] | Extended Maturity and Payment Deferral [Member] | One to Four Family [Member] |  |  |  |  |
Modified Amortized Cost |  | $ 115 |  | $ 698 |

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