Condensed Consolidated Statements of Income (Loss) (Unaudited) - USD ($) shares in Thousands	4 Months Ended
	Apr. 18, 2020	Apr. 20, 2019
Income Statement [Abstract]
Sales	$ 1,349,444,000	$ 1,263,895,000
Materials, supplies, labor and other production costs (exclusive of depreciation and amortization shown separately below)	670,873,000	652,141,000
Selling, distribution and administrative expenses	522,035,000	476,049,000
Depreciation and amortization	44,663,000	44,819,000
Recovery on inferior ingredients	0	(413,000)
Restructuring and related impairment charges		718,000
Income from operations	111,873,000	90,581,000
Interest expense	11,639,000	12,471,000
Interest income	(8,325,000)	(8,647,000)
Pension plan settlement and curtailment loss	116,207,000
Other components of net periodic pension and postretirement benefits expense	143,000	692,000
(Loss) income before income taxes	(7,791,000)	86,065,000
Income tax (benefit) expense	(2,019,000)	20,199,000
Net (loss) income	$ (5,772,000)	$ 65,866,000
Basic:
Net (loss) income per common share	$ (0.03)	$ 0.31
Weighted average shares outstanding	211,754	211,388
Diluted:
Net (loss) income per common share	$ (0.03)	$ 0.31
Weighted average shares outstanding	211,754	211,884
Cash dividends paid per common share	$ 0.1900	$ 0.1800