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Product Warranty (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Activity for accrued warranty expense        
Balance at beginning of period $ 4,333 $ 3,594 $ 3,831 $ 4,048
Provision 1,414 1,555 4,099 2,885
Claims paid/costs incurred (1,406) (1,432) (3,553) (3,162)
Foreign currency translation and other (65) 56 (101) 2
Balance at end of period $ 4,276 $ 3,773 $ 4,276 $ 3,773
Minimum        
Product Warranty Liability [Line Items]        
Product warranty period     1 year  
Maximum        
Product Warranty Liability [Line Items]        
Product warranty period     2 years