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Warranties - Change in Accruals (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Movement in Standard Product Warranty Accrual [Roll Forward]    
Balance, beginning of period $ 13,769 $ 13,522
Payments made (1,219) (1,464)
Provisions 1,157 1,467
Balance, end of period 13,707 13,525
Warranty expense $ 1,157 $ 1,467