Effect of Largest Customer in Sales (Detail) - Total year to date sales - Customer Concentration Risk	3 Months Ended		9 Months Ended
	Oct. 10, 2015	Oct. 04, 2014	Oct. 10, 2015	Oct. 04, 2014
Wal-Mart/Sam's Club
Entity Wide Revenue Major Customer [Line Items]
Concentration risk percentage	19.20%	19.50%	19.40%	19.50%
DSD Segment
Entity Wide Revenue Major Customer [Line Items]
Concentration risk percentage			84.00%
DSD Segment | Wal-Mart/Sam's Club
Entity Wide Revenue Major Customer [Line Items]
Concentration risk percentage	16.70%	17.00%	16.90%	16.80%
Warehouse Segment
Entity Wide Revenue Major Customer [Line Items]
Concentration risk percentage			16.00%
Warehouse Segment | Wal-Mart/Sam's Club
Entity Wide Revenue Major Customer [Line Items]
Concentration risk percentage	2.50%	2.50%	2.50%	2.70%