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Warranties (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Product Warranty Liability [Line Items]    
Beginning balance $ 313 $ 656
Warranty provisions 7 30
Warranty claims (23) (33)
Adjustments to preexisting warranties (75) (81)
Currency (2) (1)
Ending balance $ 220 $ 573
Minimum [Member]    
Product Warranty Liability [Line Items]    
Product Warranty Period 2 years  
Maximum [Member]    
Product Warranty Liability [Line Items]    
Product Warranty Period 3 years