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Note 16 - Derivative Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2021
Notes Tables  
Schedule of Derivative Instruments [Table Text Block]
   
March 31, 2021
 
   
Notional Amount
   
Assets
   
Liabilities
   
Collateral Pledged(1)
 
Cash Flow Hedges
     
 
     
 
     
 
     
 
Interest rate swap contracts
  $
9,000
    $
1,365
    $
    $