Note 12 - Share-Based Compensation (Details) - Stock Options Outstanding (USD $)	12 Months Ended
Sep. 30, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices, Lower Limit	$ 0.93
Exercise Prices,Upper Limit	$ 3.13
Number Outstanding (in Shares)	2,530,535
Weighted Average Remaining Contractual Life	5 years 324 days
Weighted Average Exercise Price	$ 2.09
Number Exercisable (in Shares)	2,004,750
Weighted Average Exercise Price	$ 2.18
Range1 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices, Lower Limit	$ 0.93
Exercise Prices,Upper Limit	$ 1.35
Number Outstanding (in Shares)	680,282
Weighted Average Remaining Contractual Life	3 years 295 days
Weighted Average Exercise Price	$ 1.28
Number Exercisable (in Shares)	638,843
Weighted Average Exercise Price	$ 1.27
Range 2 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices, Lower Limit	$ 1.36
Exercise Prices,Upper Limit	$ 1.70
Number Outstanding (in Shares)	73,750
Weighted Average Remaining Contractual Life	8 years 54 days
Weighted Average Exercise Price	$ 1.46
Weighted Average Exercise Price	$ 0.00
Range 3 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices, Lower Limit	$ 1.71
Exercise Prices,Upper Limit	$ 1.85
Number Outstanding (in Shares)	564,753
Weighted Average Remaining Contractual Life	6 years 58 days
Weighted Average Exercise Price	$ 1.76
Number Exercisable (in Shares)	256,532
Weighted Average Exercise Price	$ 1.76
Range 4 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices, Lower Limit	$ 1.86
Exercise Prices,Upper Limit	$ 2.30
Number Outstanding (in Shares)	350,500
Weighted Average Remaining Contractual Life	6 years 277 days
Weighted Average Exercise Price	$ 2.20
Number Exercisable (in Shares)	250,000
Weighted Average Exercise Price	$ 2.27
Range 5 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices, Lower Limit	$ 2.31
Exercise Prices,Upper Limit	$ 2.65
Number Outstanding (in Shares)	110,000
Weighted Average Remaining Contractual Life	1 year 65 days
Weighted Average Exercise Price	$ 2.63
Number Exercisable (in Shares)	109,375
Weighted Average Exercise Price	$ 2.63
Range 6 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices, Lower Limit	$ 2.66
Exercise Prices,Upper Limit	$ 3.13
Number Outstanding (in Shares)	751,250
Weighted Average Remaining Contractual Life	7 years 222 days
Weighted Average Exercise Price	$ 3.00
Number Exercisable (in Shares)	750,000
Weighted Average Exercise Price	$ 3.00

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ 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 (g)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ 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)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ 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)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ 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)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ 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 (g)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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