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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
9 Months Ended
Sep. 29, 2018
Sep. 30, 2017
Movement in Standard Product Warranty Accrual [Roll Forward]    
Balance at Beginning of Period $ 13,026 $ 13,391
Accruals for Warranties 6,068 6,287
Settlements Made (6,901) (6,823)
Balance at End of Period $ 12,193 $ 12,855