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Note 4 - Inventories (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

June 30, 2021

  

December 31, 2020

 
  

(in thousands)

 

Finished goods

 $13,238  $10,749 

Raw materials

  5,875   8,098 

Total inventories

 $19,113  $18,847 
         

Current portion

 $12,523  $10,034 

Long-term portion

  6,590   8,813 

Total inventories

 $19,113  $18,847