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Warranty Accrual Included in Other Accrued Liabilities (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Apr. 01, 2018
Product Warranty Liability [Line Items]    
Balance at beginning of period $ 7,909 $ 8,200
Acquisition 14  
Accruals for warranties issued during the period 3,066 3,063
Accruals related to pre-existing warranties 1,330 (139)
Settlements made during the period (4,567) (3,576)
Balance at end of period $ 7,752 $ 7,548