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Note 2 - Investments in Non-public Company (Details Textual) - USD ($)			1 Months Ended		3 Months Ended
	Jul. 15, 2014	Jul. 15, 2014	Oct. 29, 2014	Feb. 15, 2011	Aug. 28, 2016	Aug. 30, 2015
Windset [Member] | Apio [Member] | Senior A Preferred Stock [Member]
Investment In Non Public Company Shares				150,000
Payments to Acquire Investments				$ 15,000,000
Preferred Stock, Liquidation Preference, Value					$ 15,000,000
Windset [Member] | Apio [Member] | Common Stock [Member]
Investment In Non Public Company Shares	68	68		201
Payments to Acquire Investments				$ 201
Windset [Member] | Apio [Member] | Junior Preferred Shares [Member]
Investment In Non Public Company Shares	51,211	51,211
Preferred Stock, Liquidation Preference, Value					$ 5,100,000
Windset [Member] | Apio [Member] | Senior B Preferred Stock [Member] | First Anniversary [Member]
Investments, Value of Shares with Put Option			$ 1,500,000
Windset [Member] | Apio [Member] | Senior B Preferred Stock [Member] | Second Anniversary [Member]
Investments, Value of Shares with Put Option			2,750,000
Windset [Member] | Apio [Member] | Senior B Preferred Stock [Member] | Third Anniversary [Member]
Investments, Value of Shares with Put Option			$ 2,750,000
Windset [Member] | Apio [Member] | Senior B Preferred Stock [Member]
Investment In Non Public Company Shares			70,000
Payments to Acquire Investments			$ 7,000,000
Preferred Stock, Dividend Rate, Percentage			7.50%
Windset [Member] | Apio [Member]
Payments to Acquire Investments		$ 11,000,000
Investment Ownership Percentage					60.00%
Preferred Stock, Liquidation Preference, Value					$ 20,100,000
Windset [Member]
Investment Ownership Percentage	26.90%	26.90%
Investment Income, Dividend					413,000	$ 413,000
Change In Market Value Of Investment In Company					0	800,000
Senior A Preferred Stock [Member]
Preferred Stock, Dividend Rate, Percentage	7.50%
Investment Income, Dividend					$ 413,000	$ 413,000

X

- Definition

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

+ References

No definition available.

+ Details

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- Definition

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

+ References

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- Definition

The percentage of ownership in an investment.

+ References

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- Definition

Value of shares under a put option that can be sold back to the investee company.

+ References

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X

- Definition

Amount of dividend income on nonoperating securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

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- Definition

Value of the difference between preference in liquidation and the par or stated values of the preferred shares.

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