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Note 4 - Notes Payable (Tables)
 3 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Debt [Table Text Block]
   
March 31,
2020
    
December 31,
2019
  
   
(In thousands)
  
Term Loans
   $
33,321
     $
34,281
  
Less: current portion
    
(4,631
)
    
(4,378
)
Less: unamortized debt issuance costs
    
(97
)
    
(108
)
Notes payable, net of current portion
   $
28,593
     $
29,795