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Warranty Accrual Included in Other Accrued Liabilities (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jul. 01, 2018
Jun. 30, 2019
Jul. 01, 2018
Product Warranty Liability [Line Items]        
Balance at beginning of period $ 7,752 $ 7,548 $ 7,909 $ 8,200
Acquisition   41 14 41
Accruals for warranties issued during the period 2,295 3,348 5,360 6,411
Accruals related to pre-existing warranties 694 (34) 2,024 (173)
Settlements made during the period (2,608) (3,767) (7,174) (7,343)
Balance at end of period $ 8,133 $ 7,136 $ 8,133 $ 7,136