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Note 5 - Inventories (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

September 30,

2021

  

December 31,

2020

 
  

(in thousands)

 

Finished goods

 $11,154  $10,749 

Raw materials

  6,763   8,098 

Total inventories

 $17,917  $18,847 
         

Current portion

 $11,954  $10,034 

Long-term portion

  5,963   8,813 

Total inventories

 $17,917  $18,847