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Basis of Presentation and Summary of Significant Accounting Policies - Summary of Activity of Company's Accrued Warranty Liability (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Movement in Standard Product Warranty Accrual [Roll Forward]      
Balance at Beginning of Period $ 13,026 $ 13,391 $ 13,349
Accruals for Warranties 5,033 8,746 9,755
Settlements Made (5,759) (9,111) (9,713)
Balance at End of Period $ 12,300 $ 13,026 $ 13,391