Restructuring Liabilities - Summary of Changes in Restructuring Liabilities (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period	$ 23,461
Current period charges	4,032	$ 21,000
Change in estimate	(1,455)
Payments and usage—net of accretion	(13,988)
Balance at end of period	12,050
Severance and Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period	22,596
Current period charges	4,032
Change in estimate	(1,199)
Payments and usage—net of accretion	(13,879)
Balance at end of period	11,550
Facility Closing Costs [Member]
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period	865
Change in estimate	(256)
Payments and usage—net of accretion	(109)
Balance at end of period	$ 500