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Note 15 - Derivatives and Hedging Activities (Details Textual) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Noninterest Income, Total $ 32,077,000 $ 56,220,000 $ 45,172,000
Noninterest Expense, Total 107,981,000 110,866,000 $ 98,520,000
Interest Rate Swap [Member]      
Noninterest Income, Total 100,000    
Derivative Liability, Subject to Master Netting Arrangement, before Offset of Collateral, Total 25,900,000 4,900,000  
Derivative Liability, Subject to Master Netting Arrangement, Asset Offset 25,300,000 800,000  
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset 25,200,000 700,000  
Derivative Asset, Subject to Master Netting Arrangement, before Offset 100,000 100,000  
Derivative Liability, Subject to Master Netting Arrangement, after Offset, Total 400,000 4,100,000  
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset 400,000 4,300,000  
Derivative Liability, Subject to Master Netting Arrangement, after Offset and Deduction, Total 0 200,000  
Derivative, Notional Amount $ 401,572,000 279,419,000  
Noninterest Expense, Total   $ 200,000