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Quarterly Financial Information (unaudited) - Schedule of Quarterly Financial Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						4 Months Ended		12 Months Ended
	Dec. 30, 2017	Oct. 07, 2017	Jul. 15, 2017	Dec. 31, 2016	Oct. 08, 2016	Jul. 16, 2016	Apr. 22, 2017	Apr. 23, 2016	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 1,924,225	$ 1,906,644	$ 1,894,709	$ 1,828,183	$ 1,800,085	$ 1,827,562	$ 2,402,504	$ 2,278,770	$ 8,128,082	$ 7,734,600	$ 7,651,973
Gross profit	254,815	261,692	271,026	259,258	255,295	262,699	357,376	334,242	1,144,909	1,111,494	1,115,682
Merger/acquisition and integration	1,070	2,392	622	2,722	2,427	913	4,017	897	8,101	6,959	8,433
Goodwill impairment		189,027							189,027
Restructuring charges (gains) and asset impairment	2,799	35,626	(14)	8,402	2,662	5,748	1,021	15,304	39,432	32,116	8,802
(Loss) earnings before income taxes and discontinued operations	12,492	(199,897)	33,327	20,079	25,594	28,303	22,434	15,987	(131,644)	89,963
(Loss) earnings from continuing operations	34,710	(123,452)	21,060	12,806	16,730	17,560	15,065	9,960	(52,617)	57,056	63,166
(Loss) earnings from discontinued operations, net of taxes	(103)	(54)	(31)	39	(82)	(76)	(40)	(109)	(228)	(228)	(456)
Net (loss) earnings	$ 34,607	$ (123,506)	$ 21,029	$ 12,845	$ 16,648	$ 17,484	$ 15,025	$ 9,851	$ (52,845)	$ 56,828	$ 62,710
(Loss) earnings from continuing operations per share:
Basic (loss) earnings per share from continuing operations	$ 0.94	$ (3.31)	$ 0.56	$ 0.34	$ 0.45	$ 0.47	$ 0.40	$ 0.27	$ (1.41)	$ 1.52	$ 1.68
Diluted (loss) earnings per share from continuing operations	0.94	(3.31)	0.56	0.34	0.45	0.47	0.40	0.27	(1.41)	1.52	1.67
Net (loss) earnings per share:
Basic	0.94	(3.32)	0.56	0.34	0.44	0.47	0.40	0.26	(1.41)	1.52	1.67
Diluted	$ 0.94	$ (3.32)	$ 0.56	$ 0.34	$ 0.44	$ 0.47	$ 0.40	$ 0.26	$ (1.41)	$ 1.51	$ 1.66
Dividends	$ 6,055	$ 6,149	$ 6,245	$ 5,623	$ 5,620	$ 5,621	$ 6,255	$ 5,632	$ 24,704	$ 22,496	$ 20,299

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