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Note 10 - Summary of Option and Warrant Activity and Outstanding Shares (Details) - $ / shares	1 Months Ended	6 Months Ended
	Nov. 30, 2015	Mar. 31, 2016
Employee Stock Option [Member]
Outstanding, Stock Options (in shares)		875,977
Outstanding, Stock Options, Weighted Average Exercise Price (in dollars per share)		$ 0.98
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		129,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price		$ 1.14
Forfeited or expired, Stock Options (in shares)		(313,547)
Forfeited or expired, Stock Options, Weighted Average Exercise Price (in dollars per share)		$ 3.95
Outstanding, Stock Options (in shares)		691,430
Outstanding, Stock Options, Weighted Average Exercise Price (in dollars per share)		$ 3.08
Stock Warrants [Member]
Outstanding, Stock Warrants (in shares)		703,281
Outstanding, Stock Warrants, Weighted Average Exercise Price (in dollars per share)		$ 4.38
Granted, Stock Warrants (in shares)		30,000
Granted, Stock Warrants, Weighted Average Exercise Price (in dollars per share)		$ 4
Forfeited or expired, Stock Warrants (in shares)		(10,108)
Forfeited or expired, Stock Warrants, Weighted Average Exercise Price (in dollars per share)		$ 7.50
Outstanding, Stock Warrants (in shares)		723,173
Outstanding, Stock Warrants, Weighted Average Exercise Price (in dollars per share)		$ 4.50
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 0.83

X

- Definition

Represents the weighted average exercise price of forfeited or expired stock warrants.

+ References

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+ References

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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X

- Definition

Number of shares under non-option equity instrument agreements that were either cancelled or expired.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)-(4)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Net number of non-option equity instruments granted to participants.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

+ References

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X

- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)-(4)
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- Definition

Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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