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Commitments and Contingencies - Schedule of Changes in Warranty Reserves (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Commitments And Contingencies Disclosure [Abstract]    
Balance, beginning of the period $ 2,441 $ 2,427
Accruals 4,265 3,486
Warranty liability assumed in Merger 4,227  
Usage (4,585) (3,472)
Balance, end of the period $ 6,348 $ 2,441