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Note 11 - Pledged Collateral Related to Securities Sold Under Repurchase Agreements (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block]
  

2020

  

2019

 

Securities sold under agreements to repurchase:

        

U.S. government treasuries

 $2,078  $3,528 

U.S. government agencies

  39,851   35,557 

U.S. government mortgage-backed securities

  14,046   19,614 
         

Total pledged collateral

 $55,975  $58,699