Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Dec. 27, 2014	Dec. 30, 2017
Gain Contingencies [Line Items]
Purchase commitments				$ 741,000
Insurance recovery benefit	$ 10,499	$ 20,083
Insurance recoveries related to cash flows from investing activities		2,771
Insurance recoveries related to cash flows from operating activities	10,499	23,243
Insurance Recoveries-Tornado Loss [Member]
Gain Contingencies [Line Items]
Initial payments received		26,000
Insurance recoveries received		20,000	$ 6,000
Insurance Recoveries-Tornado Loss [Member] | Distribution, Selling and Administrative Costs [Member]
Gain Contingencies [Line Items]
Insurance recovery benefit	$ 10,000	$ 11,000
Electricity [Member]
Gain Contingencies [Line Items]
Purchase commitments				5,000
Diesel Fuel [Member]
Gain Contingencies [Line Items]
Purchase commitments				$ 33,000