Annual report pursuant to Section 13 and 15(d)

Note 21 - Fair Value Measurement (Details Textual)

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Note 21 - Fair Value Measurement (Details Textual) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2022
Dec. 31, 2021
Sep. 30, 2022
Asset Impairment Charges, Total   $ 4,200,000 $ 6,200,000  
Real Estate Owned, Amount of Loss at Acquisition $ 1,100,000 153,000    
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Foreclosure   248,000 50,000  
Mortgage Loans in Process of Foreclosure, Amount   0 299,000  
Liabilities, Total   13,297,857,000 14,296,791,000 [1]  
Fair Value, Recurring [Member]        
Liabilities, Total   $ 0 0  
Fair Value, Nonrecurring [Member]        
Liabilities, Total     $ 0 $ 0
Minimum [Member]        
Impaired Loans, Fair Value Adjustment, Percent   0.00% 0.00%  
Real Estate Owned, Fair Value Adjustment, Percent   0.00% 0.00%  
Maximum [Member]        
Impaired Loans, Fair Value Adjustment, Percent   82.00% 75.00%  
Real Estate Owned, Fair Value Adjustment, Percent   100.00% 100.00%  
Weighted Average [Member]        
Impaired Loans, Fair Value Adjustment, Percent   19.50% 24.10%  
Real Estate Owned, Fair Value Adjustment, Percent   53.30% 40.60%  
[1] derived from audited financial statements.