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Note 3 - Investment in Non-public Company (Details Textual) - USD ($)				1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 15, 2014	Jul. 15, 2014	Feb. 15, 2011	Oct. 29, 2014	Nov. 25, 2018	Nov. 26, 2017	Nov. 25, 2018	Nov. 26, 2017
Investment Income, Dividend					$ 412,000	$ 412,000	$ 825,000	$ 825,000
Senior A Preferred Stock [Member]
Preferred Stock, Dividend Rate, Percentage	7.50%
Windset [Member]
Investment Ownership Percentage	26.90%	26.90%			26.90%		26.90%
Investment Income, Dividend					$ 412,500	412,500	$ 825,000	825,000
Windset [Member] | Other Income [Member]
Change In Market Value Of Investment In Company					600,000	$ 1,300,000	1,600,000	$ 2,200,000
Windset [Member] | Apio [Member]
Payments to Acquire Investments, Total		$ 11,000,000
Dividends on Investment, Timeframe to Be Paid After Anniversary	90 days
Investment, Preferred Stock, Liquidation Preference, Value					20,100,000		20,100,000
Windset [Member] | Apio [Member] | Junior Preferred Shares [Member]
Investment, Preferred Stock, Dividends Declared					0		0
Investment, Preferred Stock, Liquidation Preference, Value					5,100,000		5,100,000
Windset [Member] | Apio [Member] | Senior A Preferred Stock [Member]
Investment, Preferred Stock, Liquidation Preference, Value					$ 15,000,000		$ 15,000,000
Windset [Member] | Apio [Member] | Senior A Preferred Stock [Member]
Investment In Non Public Company Shares			150,000
Payments to Acquire Investments, Total			$ 15,000,000
Windset [Member] | Apio [Member] | Common Stock [Member]
Investment In Non Public Company Shares	68	68	201
Payments to Acquire Investments, Total			$ 201
Windset [Member] | Apio [Member] | Junior Preferred Shares [Member]
Investment In Non Public Company Shares	51,211	51,211
Windset [Member] | Apio [Member] | Senior B Preferred Stock [Member]
Investment In Non Public Company Shares				70,000
Payments to Acquire Investments, Total				$ 7,000,000
Preferred Stock, Dividend Rate, Percentage				7.50%

X

- Definition

Change during the period in the market value of an investment in the company.

+ References

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- Definition

The timeframe in which the dividends are to be paid after each anniversary of the execution of the Windset Purchase Agreement.

+ References

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- Definition

The amount of shares in an Investment in a non-public company.

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- Definition

The percentage of ownership in an investment.

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- Definition

The dividends declared on the preferred stock held as an investment.

+ References

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- Definition

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- Definition

Amount of dividend income on nonoperating securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7(a))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

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The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

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- Definition

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