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Note 8 - Revenue From Contracts With Customers (Details Textual) - USD ($)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Revenue from Contract with Customer, Excluding Assessed Tax $ 781,000 $ 738,000
Other Real Estate, Disposals   0
Credit and Debit Card [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax $ 360,000 $ 381,000