Note 9 - Debt (Details) (USD $)							1 Months Ended				1 Months Ended			12 Months Ended		1 Months Ended		12 Months Ended		12 Months Ended
	May 25, 2014	May 28, 2013	May 26, 2013	May 23, 2012	May 25, 2014 GE Debt Agreements [Member]	May 26, 2013 GE Debt Agreements [Member]	May 23, 2012 Working Capital Line of Credit [Member] London Interbank Offered Rate (LIBOR) [Member]	May 23, 2012 Working Capital Line of Credit [Member]	May 25, 2014 Working Capital Line of Credit [Member]	May 26, 2013 Working Capital Line of Credit [Member]	May 23, 2012 Term Loan [Member] London Interbank Offered Rate (LIBOR) [Member]	May 23, 2012 Term Loan [Member]	May 25, 2014 Term Loan [Member]	May 25, 2014 Remarketing Fee [Member]	May 25, 2014 Annual Fees [Member]	Apr. 23, 2012 London Interbank Offered Rate (LIBOR) [Member] Apio, Inc [Member]	Apr. 23, 2012 Apio, Inc [Member]	May 25, 2014 Apio, Inc [Member]	May 26, 2013 Apio, Inc [Member]	May 25, 2014 Lifecore [Member]	May 26, 2013 Lifecore [Member]
Note 9 - Debt (Details) [Line Items]
Line of Credit Facility, Expiration Period								2 years									5 years
Line of Credit Facility, Maximum Borrowing Capacity								$ 10,000,000									$ 25,000,000
Debt Instrument, Basis Spread on Variable Rate							1.85%				2.00%					2.00%
Line of Credit Facility, Remaining Borrowing Capacity									7,900,000									19,800,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage																		0.375%
Long-term Line of Credit									0	0								0	4,000,000
Minimum Fixed Charge Coverage Ratio																		1.10		1.10
Minimum Fixed Charge Coverage Ratio Threshold																		7,500,000
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums					964,000	1,200,000														98,000	149,000
Number of Financing Agreements				2
Long-term Debt	34,372,000		40,305,000										12,000,000
Debt Instrument, Term												4 years
Debt Instrument, Periodic Payment, Principal												250,000
Letters of Credit Outstanding, Amount				3,500,000
Minimum Quick Ratio																				1.25
Minimum Tangible Net Worth		$ 29,000,000
Annual Re-Marketing Fee Percentage														0.125%
Annual Letter of Credit Fee Percentage															0.75%