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Warranty Accrual Included in Other Accrued Liabilities (Detail) - USD ($)
$ in Thousands
3 Months Ended
Apr. 02, 2017
Apr. 03, 2016
Product Warranty Liability [Line Items]    
Balance at beginning of period $ 7,203 $ 6,925
Accruals for warranties issued during the period 3,021 3,490
Adjustments related to pre-existing warranties (471) 243
Settlements made during the period (2,699) (3,162)
Balance at end of period $ 7,054 $ 7,496