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Note 11 - Securities Sold Under Agreements to Repurchase (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Short-term Debt [Table Text Block]

December 31, (Dollars in thousands)

 

2019

   

2018

 

Outstanding balance at end of period

  $ 31,895     $ 36,094  

Weighted average interest rate at end of period

    0.22

%

    0.27

%

Years Ended December 31, (dollars in thousands)

 

2019

   

2018

   

2017

 
                         

Average outstanding balance during the period

  $ 38,555     $ 62,580     $ 70,187  

Average interest rate during the period

    0.26

%

    0.25

%

    0.19

%

Maximum outstanding at any month end during the period

  $ 52,599     $ 74,725     $ 75,365