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Note 11 - Fair Value Measurement (Details Textual) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Asset Impairment Charges | $ 1,100,000 | $ 2,300,000 |  |
Real Estate Owned, Amount of Loss at Acquisition | 95,000 | $ 0 |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Foreclosure | 450,000 |  | $ 360,000 |
Mortgage Loans in Process of Foreclosure, Amount | 547,000 |  | 292,000 |
Liabilities | 14,245,594,000 |  | 14,689,263,000 | [1]
Fair Value, Recurring [Member] |  |  |  |
Liabilities |  |  | 0 |
Fair Value, Nonrecurring [Member] |  |  |  |
Liabilities | $ 0 |  | $ 0 |
Minimum [Member] |  |  |  |
Impaired Loans, Fair Value Adjustment, Percent | 0.00% |  | 0.00% |
Real Estate Owned, Fair Value Adjustment, Percent | 25.00% |  | 25.00% |
Maximum [Member] |  |  |  |
Impaired Loans, Fair Value Adjustment, Percent | 68.00% |  | 66.00% |
Real Estate Owned, Fair Value Adjustment, Percent | 100.00% |  | 100.00% |
Weighted Average [Member] |  |  |  |
Impaired Loans, Fair Value Adjustment, Percent | 24.00% |  | 25.00% |
Real Estate Owned, Fair Value Adjustment, Percent | 49.70% |  | 38.30% |
[1] | derived from audited financial statements.

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482130/360-10-45-4 + Details
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