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Note 8 - Inventory (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

September 30,

  

December 31,

 

(in thousands)

 

2021

  

2020

 

Total inventory

 $10,102  $11,122 

Allowance for obsolescence

  (289)  (260)

Inventory, net of allowance

 $9,813  $10,862