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Note 15 - Revenue from Contracts with Customers (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Revenue from Contract with Customer, Excluding Assessed Tax, Total $ 3,196 $ 3,844
Credit and Debit Card [Member]    
Revenue from Contract with Customer, Excluding Assessed Tax, Total $ 1,400 $ 1,500