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 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Movement in Standard Product Warranty Accrual [Roll Forward]    
Beginning warranty accrual $ 11,730 $ 8,693
Warranty provision 917 3,843
Warranty payments (627) (806)
Ending warranty accrual $ 12,020 $ 11,730