Note 4 - Investments in Non-public Companies (Details) (USD $)	12 Months Ended					0 Months Ended		0 Months Ended	1 Months Ended				0 Months Ended	1 Months Ended			12 Months Ended
	May 25, 2014	May 26, 2013	May 28, 2013	May 27, 2012	Feb. 15, 2011 Preferred Stock [Member] Windset [Member]	Feb. 15, 2011 Common Stock [Member] Apio, Inc [Member] Windset [Member]	Feb. 15, 2011 Common Stock [Member] Apio, Inc [Member] Windset [Member]	Feb. 15, 2011 Common Stock [Member] Windset [Member]	May 30, 2010 Aesthetic Sciences [Member]	May 25, 2014 Aesthetic Sciences [Member]	May 26, 2013 Aesthetic Sciences [Member]	Jul. 16, 2010 Aesthetic Sciences [Member]	Feb. 15, 2011 Windset [Member]	May 25, 2014 Windset [Member]	May 31, 2013 Windset [Member]	May 31, 2012 Windset [Member]	May 25, 2014 Windset [Member]	May 26, 2013 Windset [Member]	May 27, 2012 Windset [Member]	Feb. 15, 2011 Windset [Member]
Note 4 - Investments in Non-public Companies (Details) [Line Items]
Long-term Investments										$ 793,000	$ 793,000	$ 1,800,000
Other than Temporary Impairment Losses, Investments									1,000,000
Investment in Non-Public Company Shares (in Shares)					150,000		201
Payments to Acquire Investments						201		15,000,000
Investment Ownership Percentage																				20.10%
Preferred Stock, Dividend Rate, Percentage													7.50%
Dividends and Interest Paid														1,100,000	1,100,000	1,100,000
Investment Income, Dividend	1,125,000	1,125,000	1,125,000	1,125,000													1,100,000	1,100,000	1,100,000
Change in Market Value of Investment																	$ 10,000,000	$ 8,100,000	$ 5,800,000