Note 9 - Commitments and Contingencies (Details Textual)							9 Months Ended	12 Months Ended
	Jul. 01, 2018 USD ($)	Nov. 01, 2017 USD ($)	Jul. 03, 2017 USD ($)	May 05, 2017 USD ($)	Dec. 27, 2016 USD ($)	Sep. 03, 2015 ft²	May 29, 2016 USD ($)	May 28, 2017 USD ($)	May 29, 2016 USD ($)	May 31, 2015 USD ($)
Operating Leases, Rent Expense								$ 5,600,000	$ 4,500,000	$ 5,000,000
Area of Real Estate Property | ft²						65,000
Capital Lease, Initial Term						7 years
Capital Lease, Period After Which Buyout Option is Available						7 years
Capital Leases, Balance Sheet, Assets by Major Class, Net								3,700,000
Capital Lease, Monthly Lease Payment							$ 34,000
Capital Lease, Percentage Per Year By Which the Monthly Payment Increases							2.40%
Purchase Commitment, Remaining Minimum Amount Committed								19,100,000
Payment on Purchase Commitments							$ 30,500,000	32,200,000	30,500,000	$ 16,800,000
Litigation Settlement, Expense								2,600,000
Legal Fees								2,100,000	$ 542,000
Loss Contingency Accrual								3,200,000
Discrimination and Wrongful Termination and Wage and Hour Claims [Member]
Loss Contingency, Receivable								1,200,000
Apio [Member]
Capital Leases, Balance Sheet, Assets by Major Class, Net								$ 104,000
Apio [Member] | Unfair Labor Claims [Member]
Litigation Settlement, Amount Awarded to Other Party					$ 155,000
Apio and Pacific Harvest [Member] | Unfair Labor Claims [Member]
Litigation Settlement, Amount Awarded to Other Party					$ 310,000
Apio and Pacific Harvest [Member] | Discrimination and Wrongful Termination and Wage and Hour Claims [Member]
Litigation Settlement, Amount Awarded to Other Party				$ 6,000,000
Payments for Legal Settlements			$ 2,400,000
Legal Settlement, Amount to Be Reimbursed			$ 1,200,000
Number of Installments				3
Apio and Pacific Harvest [Member] | Discrimination and Wrongful Termination and Wage and Hour Claims [Member] | Scenario, Forecast [Member]
Payments for Legal Settlements	$ 1,800,000	$ 1,800,000