Sales by Product Category in Each Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 07, 2017	Oct. 08, 2016	Oct. 07, 2017	Oct. 08, 2016
Segment Reporting Information [Line Items]
Sales	$ 932,822	$ 918,791	$ 3,047,110	$ 3,058,168
DSD Segment
Segment Reporting Information [Line Items]
Sales	787,255	768,920	2,580,007	2,553,690
Warehouse Segment
Segment Reporting Information [Line Items]
Sales	145,567	149,871	467,103	504,478
Branded Retail
Segment Reporting Information [Line Items]
Sales	550,798	534,727	1,792,869	1,784,748
Branded Retail | DSD Segment
Segment Reporting Information [Line Items]
Sales	514,556	496,361	1,675,246	1,646,840
Branded Retail | Warehouse Segment
Segment Reporting Information [Line Items]
Sales	36,242	38,366	117,623	137,908
Store Branded Retail
Segment Reporting Information [Line Items]
Sales	138,612	137,101	455,053	454,125
Store Branded Retail | DSD Segment
Segment Reporting Information [Line Items]
Sales	110,822	110,625	368,265	360,102
Store Branded Retail | Warehouse Segment
Segment Reporting Information [Line Items]
Sales	27,790	26,476	86,788	94,023
Non-Retail and Other
Segment Reporting Information [Line Items]
Sales	243,412	246,963	799,188	819,295
Non-Retail and Other | DSD Segment
Segment Reporting Information [Line Items]
Sales	161,877	161,934	536,496	546,748
Non-Retail and Other | Warehouse Segment
Segment Reporting Information [Line Items]
Sales	$ 81,535	$ 85,029	$ 262,692	$ 272,547