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Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Per Share, Employee Savings, Fair Value Measurements Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	12 Months Ended
	May 30, 2021	May 31, 2020	May 26, 2019	May 27, 2018
Organization, Basis of Presentation, and Summary of Significant Accounting Policies [Line Items]
Weighted average exercise price of common stock (in dollars per share)	$ 11.07	$ 12.15	$ 12.94	$ 13.20
Amount participants are allowed to contribute of their salaries	50.00%
Company contribution to employee contribution plan	$ 2,100	$ 2,200	$ 1,800
Property and equipment, net	179,559	192,338
Rock Hill, South Carolina, Distribution Facility
Organization, Basis of Presentation, and Summary of Significant Accounting Policies [Line Items]
Asset held for sale	$ 500
Salad dressing plant in Ontario, CA
Organization, Basis of Presentation, and Summary of Significant Accounting Policies [Line Items]
Property and equipment, net		$ 2,600
First Three Percent Match
Organization, Basis of Presentation, and Summary of Significant Accounting Policies [Line Items]
Company match of contribution plan, percent	100.00%
Percent of employees' gross pay	3.00%
Next Two Percent Match
Organization, Basis of Presentation, and Summary of Significant Accounting Policies [Line Items]
Company match of contribution plan, percent	50.00%
Percent of employees' gross pay	2.00%
Restricted Stock Units (RSUs)
Organization, Basis of Presentation, and Summary of Significant Accounting Policies [Line Items]
Antdilutive securities outstanding (in shares)	0.3	0.2
Employee Stock Option
Organization, Basis of Presentation, and Summary of Significant Accounting Policies [Line Items]
Antdilutive securities outstanding (in shares)	1.7	1.7	1.6
Weighted average exercise price of common stock (in dollars per share)	$ 11.36	$ 12.71	$ 13.74

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