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Note 19 - Fair Value Measurements (Details Textual)
3 Months Ended 12 Months Ended
Dec. 31, 2022
USD ($)
Sep. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Sep. 30, 2021
USD ($)
Jun. 30, 2021
USD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Liabilities, Fair Value Disclosure, Total $ 0       $ 0               $ 0 $ 0  
Provision for Loan and Lease Losses $ 400,000 $ 175,000 $ 200,000 $ 175,000 (400,000) $ 0 $ 0 $ 75,000 $ 225,000 $ 400,000 $ 825,000 $ 351,000 $ 950,000 (325,000) $ 1,801,000
Number of Foreclosed Real Estate Properties 0                       0    
Fair Value, Nonrecurring [Member]                              
Loans Held-for-sale, Fair Value Disclosure $ 0       $ 0               $ 0 0  
Impaired Loan [Member]                              
Provision for Loan and Lease Losses                         148,000 12,000 0
Foreclosed Real Estate [Member]                              
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Write-down or Reserve, Amount                         $ 0 $ 5,000 $ 0
Fair Value, Inputs, Level 3 [Member] | Impaired Loan [Member] | Minimum [Member]                              
Fair Value Inputs, Estimated Selling Costs                           10.00%  
Fair Value, Inputs, Level 3 [Member] | Foreclosed Real Estate [Member]                              
Fair Value Inputs, Estimated Selling Costs                           65.00%