Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Fair Value Measurement (Details Textual)

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Note 11 - Fair Value Measurement (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Asset Impairment Charges $ 4,800,000 $ 4,100,000 $ 5,800,000 $ 6,300,000  
Real Estate Owned, Amount of Loss at Acquisition 1,000 $ 5,000 96,000 $ 5,000  
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Foreclosure     529,000   $ 360,000
Mortgage Loans in Process of Foreclosure, Amount 426,000   426,000   292,000
Liabilities 14,539,236,000   14,539,236,000   14,689,263,000
Fair Value, Recurring [Member]          
Liabilities 0   0   0
Fair Value, Nonrecurring [Member]          
Liabilities $ 0   $ 0   $ 0
Minimum [Member]          
Impaired Loans, Fair Value Adjustment, Percent 0.00%   0.00%   0.00%
Real Estate Owned, Fair Value Adjustment, Percent 10.00%   10.00%   25.00%
Maximum [Member]          
Impaired Loans, Fair Value Adjustment, Percent 75.00%   75.00%   66.00%
Real Estate Owned, Fair Value Adjustment, Percent 100.00%   100.00%   100.00%
Weighted Average [Member]          
Impaired Loans, Fair Value Adjustment, Percent 29.00%   29.00%   25.00%
Real Estate Owned, Fair Value Adjustment, Percent 27.00%   27.00%   38.30%