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Note 6 - Securities Sold Under Agreements to Repurchase (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Schedule of Repurchase Agreements [Table Text Block]
  

Six Months

Ended

June 30,

2020

  

Twelve Months

Ended

December 31,

2019

 
         

Outstanding balance at end of period

 $167,527,000  $102,675,000 

Average interest rate at end of period

  0.10

%

  0.17

%

         

Average daily balance during the period

 $123,486,000  $105,234,000 

Average interest rate during the period

  0.13

%

  0.24

%

Maximum daily balance during the period

 $167,527,000  $133,411,000