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Note 3 - Investment Securities (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Debt Securities, Available-for-sale [Table Text Block]
  

June 30,

  

December 31,

 
  

2020

  

2019

 
  

Fair value

  

Cost

  

Fair value

  

Cost

 

JPMorgan Managed Income Fund

 $  $  $62,207  $62,178