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Note 19 - Fair Value Measurements - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - Impaired Loans [Member] - Fair Value, Nonrecurring [Member] - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Assets, Fair Value $ 1,454 $ 3,595
Fair Value, Inputs, Level 1 [Member]    
Assets, Fair Value 0 0
Fair Value, Inputs, Level 2 [Member]    
Assets, Fair Value 0 0
Fair Value, Inputs, Level 3 [Member]    
Assets, Fair Value $ 1,454 $ 3,595