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 ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Asset Impairment Charges   $ 3,000  
Real Estate Owned, Amount of Loss at Acquisition $ 0 $ 6,000  
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Foreclosure 248,000   $ 248,000
Mortgage Loans in Process of Foreclosure, Amount 190,000   0
Liabilities, Total 13,226,742   13,297,857 [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 90.00%   82.00%
Real Estate Owned, Fair Value Adjustment, Percent 100.00%   100.00%
Weighted Average [Member]      
Impaired Loans, Fair Value Adjustment, Percent 14.90%   19.50%
Real Estate Owned, Fair Value Adjustment, Percent 53.30%   53.30%
[1] derived from audited financial statements.