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

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

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

+ References

No definition available.

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of ownership in an investment.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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

+ Details

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Balance Type:	credit
Period Type:	duration

- 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
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Balance Type:
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- Details

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Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_OtherIncomeMember
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Data Type:	na
Balance Type:
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- Details

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Data Type:	na
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- Details

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- Details

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Balance Type:
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- Details

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- Details

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Note 3 - Investment in Non-public Company (Details Textual) - USD ($)			1 Months Ended		12 Months Ended
	Jul. 15, 2014	Jul. 15, 2014	Oct. 29, 2014	Feb. 15, 2011	May 28, 2017	May 29, 2016	May 31, 2015	May 25, 2014
Payments to Acquire Investments							$ 18,000,000
Investment Income, Dividend					$ 1,650,000	1,650,000	1,417,000
Senior A Preferred Stock [Member]
Preferred Stock, Dividend Rate, Percentage		7.50%
Windset [Member]
Investment Ownership Percentage	26.90%	26.90%			26.90%
Investment Income, Dividend					$ 1,700,000	1,700,000	1,400,000
Windset [Member] \| Other Income [Member]
Change In Market Value Of Investment In Company						$ 900,000	$ 1,200,000	$ 3,900,000
Windset [Member] \| Apio [Member]
Payments to Acquire Investments	$ 11,000,000
Preferred Stock, Liquidation Preference, Value					20,100,000
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]
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] \| 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