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Note 5 - Senior Credit Facility (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Schedule of Maturities of Long-term Debt [Table Text Block]
   

Principal Payments

 

2020

  $ 10,000  

2021

    20,000  

2022

    20,000  
         

Total

  $ 50,000