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Note 6 - Securities Sold Under Agreements to Repurchase (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Repurchase Agreements [Table Text Block]
  

Six Months

Ended

June 30, 2021

  

Twelve Months

Ended

December 31, 2020

 
         

Outstanding balance at end of period

 $169,737,000  $118,365,000 

Average interest rate at end of period

  0.11

%

  0.12

%

         

Average daily balance during the period

 $141,861,000  $132,880,000 

Average interest rate during the period

  0.11

%

  0.12

%

Maximum daily balance during the period

 $180,719,000  $173,186,000