Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses and Other Liabilities - Product Warranty Accrual (Details)

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Accrued Expenses and Other Liabilities - Product Warranty Accrual (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Movement in Standard Product Warranty Accrual [Roll Forward]        
Beginning warranty accrual $ 13,595 $ 9,885 $ 11,730 $ 8,693
Warranty provision 1,107 1,327 3,972 2,720
Warranty payments (436) (183) (1,436) (384)
Ending warranty accrual $ 14,266 $ 11,029 $ 14,266 $ 11,029