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Summary of Significant Accounting Policies - Basis of Presentation and Use of Estimates (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 28, 2018	Feb. 28, 2017	Aug. 31, 2017	Aug. 31, 2016
Accounting Policies [Abstract]
Losses from operations	$ 1,239	$ 1,129	$ 2,104	$ 2,232	$ 4,300	$ 20,600
Gross profits (losses) on product sales	(444)	7	(392)	123	82	(4,900)
Net cash provided by (used in) operating activities			162	(1,759)	(2,100)	(3,400)
Cash and cash equivalents	$ 3,857	$ 4,068	$ 3,857	$ 4,068	$ 3,582	$ 6,030

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3044-108585

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-Publisher FASB
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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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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 210.5-03.1,2)
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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585

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-Section 45
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-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

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The net result for the period of deducting operating expenses from operating revenues.

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