Sales by Product Category in Each Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 15, 2017	Jul. 16, 2016	Jul. 15, 2017	Jul. 16, 2016
Segment Reporting Information [Line Items]
Sales	$ 926,639	$ 935,025	$ 2,114,288	$ 2,139,377
DSD Segment
Segment Reporting Information [Line Items]
Sales	792,892	785,767	1,792,752	1,784,770
Warehouse Segment
Segment Reporting Information [Line Items]
Sales	133,747	149,258	321,536	354,607
Branded Retail
Segment Reporting Information [Line Items]
Sales	548,343	549,647	1,241,905	1,250,029
Branded Retail | DSD Segment
Segment Reporting Information [Line Items]
Sales	514,594	508,426	1,160,681	1,150,487
Branded Retail | Warehouse Segment
Segment Reporting Information [Line Items]
Sales	33,749	41,221	81,224	99,542
Store Branded Retail
Segment Reporting Information [Line Items]
Sales	144,290	145,778	316,316	317,025
Store Branded Retail | DSD Segment
Segment Reporting Information [Line Items]
Sales	120,115	116,493	257,641	249,477
Store Branded Retail | Warehouse Segment
Segment Reporting Information [Line Items]
Sales	24,175	29,285	58,675	67,548
Non-Retail and Other
Segment Reporting Information [Line Items]
Sales	234,006	239,600	556,067	572,323
Non-Retail and Other | DSD Segment
Segment Reporting Information [Line Items]
Sales	158,183	160,848	374,430	384,806
Non-Retail and Other | Warehouse Segment
Segment Reporting Information [Line Items]
Sales	$ 75,823	$ 78,752	$ 181,637	$ 187,517