CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (Unaudited) - USD ($) $ in Thousands		4 Months Ended
		Apr. 22, 2017	Apr. 23, 2016
Income Statement [Abstract]
Net sales		$ 2,402,504	$ 2,278,770
Cost of sales		2,045,128	1,944,528
Gross profit		357,376	334,242
Operating expenses
Selling, general and administrative		322,694	296,381
Merger/acquisition and integration		4,017	897
Restructuring charges and asset impairment		1,021	15,304
Total operating expenses		327,732	312,582
Operating earnings		29,644	21,660
Other (income) and expenses
Interest expense		7,315	5,823
Other, net		(105)	(150)
Total other expenses, net		7,210	5,673
Earnings before income taxes and discontinued operations		22,434	15,987
Income taxes		7,369	6,027
Earnings from continuing operations		15,065	9,960
Loss from discontinued operations, net of taxes		(40)	(109)
Net earnings		$ 15,025	$ 9,851
Basic earnings per share:
Earnings from continuing operations		$ 0.40	$ 0.27
Loss from discontinued operations	[1]		(0.01)
Net earnings		0.40	0.26
Diluted earnings per share:
Earnings from continuing operations		0.40	0.27
Loss from discontinued operations	[1]		(0.01)
Net earnings		$ 0.40	$ 0.26

[1] Includes rounding