Note 10 - Debt (Detail) (USD $)	1 Months Ended				3 Months Ended				6 Months Ended	3 Months Ended		1 Months Ended						1 Months Ended
	May 23, 2012	Apr. 23, 2012	Nov. 25, 2012	May 27, 2012	Aug. 19, 2012 Remarketing Fee [Member]	Aug. 19, 2012 Annual Fees [Member]	Nov. 25, 2012 GE [Member]	May 27, 2012 GE [Member]	Nov. 25, 2012 Apio [Member]	Aug. 26, 2012 Lifecore [Member]	Nov. 25, 2012 Lifecore [Member]	Apr. 23, 2012 Apio [Member]	Nov. 25, 2012 Apio [Member]	May 27, 2011 Apio [Member]	Nov. 25, 2012 Term Loan [Member]	Nov. 25, 2012 Working Capital Line of Credit [Member]	May 23, 2012 Working Capital Line of Credit [Member]	May 23, 2012 Term Loan [Member]
Line of Credit Facility Term	1 year	5 years
Line of Credit Facility, Maximum Borrowing Capacity												$ 25,000,000					$ 8,000,000
Debt Instrument, Basis Spread on Variable Rate												2.00%					1.85%	2.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage												0.375%
Line of Credit Facility, Amount Outstanding													7,500,000	11,700,000
Minimum Fixed Charge Coverage Ratio									1.10 to 1.0	1.10 to 1.0
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums				139,000			1,100,000	1,300,000			174,000
Number of Financing Agreements	2
Line of Credit Facility, Current Borrowing Capacity																7,300,000
Long-term Debt			44,227,000	47,317,000											12,000,000
Long Term Debt Contractual Maturity Term																		4 years
Debt Instrument, Periodic Payment, Principal																		250,000
Letters of Credit Outstanding, Amount	3,500,000
Minimum Quick Ratio										1.25 to 1.00
Minimum Tangible Net Worth			$ 29,000,000
Annual Re-Marketing Fee Percentage					0.125%
Annual Letter of Credit Fee Percentage						0.75%