Certificates of Deposit and Marketable Securities (Details 1) - USD ($)	6 Months Ended	12 Months Ended
Nov. 30, 2016	May 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 1,527,866	$ 1,544,866
Gross Unrealized Holding Gains	10,894	8,406
Gross Unrealized Holding Losses
Recorded Value	1,538,760	1,553,272
Certificates of Deposit [Member] \| Current [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,511,000	1,528,000
Gross Unrealized Holding Gains
Gross Unrealized Holding Losses
Recorded Value	1,511,000	1,528,000
Equity Securities [Member] \| Current [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	16,866	16,866
Gross Unrealized Holding Gains	10,894	8,406
Gross Unrealized Holding Losses
Recorded Value	$ 27,760	$ 25,272

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.2)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563

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Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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