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Note 9 - Inventory (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

December 31,

 

(in thousands)

 

2020

  

2019

 
         
Total inventory  11,122   10,319 

Allowance for obsolescence

  (260)  (244)
Inventory, net of allowance $10,862  $10,075