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Product Warranty (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Product Warranty      
Product warranty period 1 year    
Changes in standard product warranty liability      
Balance at January 1 (beginning of year) $ 6,924 $ 4,612  
Warranties issued during the period 2,140 1,288  
Settlements made during the period (1,430) (968)  
Changes in estimate of liability for pre-existing warranties during the period 375 (192)  
Balance at March 31 (end of period) 8,009 4,740  
Product warranty classification      
Amount classified as current 7,203 4,181 $ 6,424
Amount classified as long-term 806 559  
Total warranty liability $ 8,009 $ 4,740 $ 6,924