Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands	4 Months Ended
	Apr. 20, 2019	Apr. 21, 2018
Income Statement [Abstract]
Sales	$ 1,263,895,000	$ 1,206,453,000
Materials, supplies, labor and other production costs (exclusive of depreciation and amortization shown separately below)	652,141,000	625,122,000
Selling, distribution and administrative expenses	476,049,000	454,463,000
Depreciation and amortization	44,819,000	44,189,000
Loss (recovery) on inferior ingredients	(413,000)
Impairment of assets		2,483,000
Multi-employer pension plan withdrawal costs		2,322,000
Restructuring and related impairment charges	718,000	1,259,000
Income from operations	90,581,000	76,615,000
Interest expense	12,471,000	10,996,000
Interest income	(8,647,000)	(8,095,000)
Pension plan settlement loss	0	4,668,000
Other components of net periodic pension and postretirement benefits expense (credit)	692,000	(735,000)
Income before income taxes	86,065,000	69,781,000
Income tax expense	20,199,000	18,534,000
Net income	$ 65,866,000	$ 51,247,000
Basic:
Net income per common share	$ 0.31	$ 0.24
Weighted average shares outstanding	211,388	210,888
Diluted:
Net income per common share	$ 0.31	$ 0.24
Weighted average shares outstanding	211,884	211,311
Cash dividends paid per common share	$ 0.1800	$ 0.1700