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Schedule II - Valuation and Qualifying Accounts (Tables)
 12 Months Ended
Dec. 31, 2020
Notes Tables  
Valuation Allowances and Reserves [Table Text Block]
   
Balance at

Beginning

of Period
    
Expense

(Recovery)
    
Deductions
    
Foreign

Currency

Translation

Adjustments
    
Balance at

End of

Period
  
                                         
Year Ended December 31, 2020
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Allowance for doubtful accounts
   $
211
     $
-
     $
-
     $
1
     $
212
  
Warranty reserve
    
334
      
32
      
(131
)
    
-
      
235
  
                                         
Year Ended December 31, 2019
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Allowance for doubtful accounts
   $
233
     $
3
     $
(25
)
    
-
     $
211
  
Warranty reserve
    
346
      
243
      
(255
)
    
-
      
334