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Note 5 - Notes Payable (Tables)
 3 Months Ended
Mar. 31, 2019
Notes Tables  
Schedule of Debt [Table Text Block]
   
March 31,
2019
    
December 31,
2018
  
   
(In thousands)
  
Term Loans
   $
37,079
     $
37,996
  
Less: current portion
    
(3,714
)
    
(3,667
)
Less: unamortized debt issuance costs
    
(142
)
    
(153
)
Notes payable, net of current portion
   $
33,223
     $
34,176