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Note 7 - Inventories (Tables)
9 Months Ended
Sep. 30, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

September 30,
2021

  

December 31,
2020

 

Raw materials

 $6,768  $5,371 

Work in process

  1,148   1,085 

Inventory consigned to others

  44   45 

Finished goods

  1,399   975 

Total inventories

 $9,359  $7,476 
  

Three Months Ended
September 30,

  

Nine Months Ended
September 30,

 
  

2021

  

2020

  

2021

  

2020

 
                 

Excess and obsolete inventory charges

 $61  $105  $154  $410