SEGMENT INFORMATION - Product Category (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Revenue by product category
Net sales	$ 393,654	$ 407,170	$ 1,158,836	$ 1,225,557
Sandwiches
Revenue by product category
Net sales	112,583	113,953	353,478	345,494
Sandwich components
Revenue by product category
Net sales	147,875	162,100	419,815	472,170
Other entrees and snacks
Revenue by product category
Net sales	$ 133,196	$ 131,117	$ 385,543	$ 407,893