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Note 4 - Loans - Amortized Cost of Modified Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Modified | $ 9,163 | $ 2,872 | $ 11,946
Extended Maturity [Member] |  |  |
Modified | 4,720 | 0 |
Contractual Interest Rate Reduction [Member] |  |  |
Modified | 0 | 0 |
Payment Deferral [Member] |  |  |
Modified | 351 | 222 |
Reduction of Interest Rate and Change in Payment Terms [Member] |  |  |
Modified | 4,092 | 2,650 |
Commercial Portfolio Segment [Member] |  |  |
Modified | $ 8,942 | $ 2,650 | $ 6,115
Modification as a % of total loans | 0.29% | 0.08% |
Weighted average rate reduction | 0.20% | (1.10%) |
Weighted average term increase (Year) | 2 years 3 months 18 days | 2 years 2 months 12 days |
Weighted average payment deferral (Year) | 1 month 6 days | 10 months 24 days |
Commercial Portfolio Segment [Member] | Extended Maturity [Member] |  |  |
Modified | $ 4,720 | $ 0 |
Commercial Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member] |  |  |
Modified | 0 | 0 |
Commercial Portfolio Segment [Member] | Payment Deferral [Member] |  |  |
Modified | 130 | 0 |
Commercial Portfolio Segment [Member] | Reduction of Interest Rate and Change in Payment Terms [Member] |  |  |
Modified | 4,092 | 2,650 |
Residential Mortgage Loans [Member] |  |  |
Modified | $ 221 | $ 222 |
Modification as a % of total loans | 0.00% | 0.00% |
Weighted average rate reduction | 0.00% | (0.10%) |
Weighted average term increase (Year) | 0 years | 0 years |
Weighted average payment deferral (Year) | 2 years | 2 years |
Residential Mortgage Loans [Member] | Extended Maturity [Member] |  |  |
Modified | $ 0 | $ 0 |
Residential Mortgage Loans [Member] | Contractual Interest Rate Reduction [Member] |  |  |
Modified | 0 | 0 |
Residential Mortgage Loans [Member] | Payment Deferral [Member] |  |  |
Modified | 221 | 222 |
Residential Mortgage Loans [Member] | Reduction of Interest Rate and Change in Payment Terms [Member] |  |  |
Modified | $ 0 | $ 0 |

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- Definition Period of payment deferral in weighted average of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Percentage of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
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- Definition Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 33 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-33 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
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- Definition Percentage of decrease in weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A + Details
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- Definition Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A + Details
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