Marketable Securities (Details Textual) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
May 31, 2017	Aug. 31, 2016
Marketable Securities (Textual)
Percentage of ownership interest	8.70%
Cost of securities	$ 595	$ 595
Marketable securities	$ 1,409	$ 530
Minimum [Member]
Marketable Securities (Textual)
Yield to cost rates	1.40%	0.96%
Maximum [Member]
Marketable Securities (Textual)
Yield to cost rates	2.05%	1.80%

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given debt price.

No definition available.

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- References

No definition available.

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

+ Details

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- Definition

Total debt and equity financial instruments including: (1) securities held-to-maturity and (2) securities available-for-sale that will be held for the long-term.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26626-111562

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Cost of investments in equity securities and other forms of securities that provide ownership interests classified as trading.

+ References

No definition available.

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