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Note 7 - Loans Receivable - Loan Modifications (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021
% of total segment financing receivables | 0.04% |  |
Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Modified, Accumulated | $ 224 |  |
Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Modified, Accumulated | 0 |  |
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Modified, Accumulated | 0 |  |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Modified, Accumulated | 376 |  |
Payment Deferral [Member] |  |  |
Financing Receivable, Modified, Accumulated | 600 |  |
Extended Maturity [Member] |  |  |
Financing Receivable, Modified, Accumulated | 0 |  |
Contractual Interest Rate Reduction [Member] |  |  |
Financing Receivable, Modified, Accumulated | 0 |  |
Extended Maturity and Interest Rate Reduction [Member] |  |  |
Financing Receivable, Modified, Accumulated | $ 0 |  |
Residential Portfolio Segment [Member] |  |  |
Financing Receivable, Modified, Accumulated |  | $ 194 | $ 150
% of total segment financing receivables | 0.13% |  |
Residential Portfolio Segment [Member] | Payment Deferral [Member] |  |  |
Financing Receivable, Modified, Accumulated | $ 600 |  |
Residential Portfolio Segment [Member] | Extended Maturity [Member] |  |  |
Financing Receivable, Modified, Accumulated | 0 |  |
Residential Portfolio Segment [Member] | Contractual Interest Rate Reduction [Member] |  |  |
Financing Receivable, Modified, Accumulated | 0 |  |
Residential Portfolio Segment [Member] | Extended Maturity and Interest Rate Reduction [Member] |  |  |
Financing Receivable, Modified, Accumulated | $ 0 |  |

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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/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 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 + Details
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- Definition Accumulated amortized cost of financing receivable modified for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -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 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 310 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481746/310-40-50-4 + Details
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