Derivative Financial Instruments - Additional Information (Detail) - USD ($)	6 Months Ended		12 Months Ended
	Jul. 03, 2016	Jun. 28, 2015	Jan. 03, 2016
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative assets, gross	$ 1,200,000	$ 1,800,000	$ 200,000
Derivative liabilities, gross	800,000	1,900,000	3,600,000
Commodity Hedging Agreements [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Amount	$ 39,300,000	$ 85,600,000	$ 64,900,000
Latest Maturity	2017-12	2016-12	2017-12