Note 8 - Stock Compensation Expense (Details) - Summary of assumptions used to determin the fair value of each option grant using the Black-Scholes option-pricing model:	12 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2013 Minimum [Member]	Sep. 30, 2012 Minimum [Member]	Sep. 30, 2013 Maximum [Member]	Sep. 30, 2012 Maximum [Member]
Note 8 - Stock Compensation Expense (Details) - Summary of assumptions used to determin the fair value of each option grant using the Black-Scholes option-pricing model: [Line Items]
Expected life of option (years)		5 years	3 years	3 years	5 years	5 years
Risk-free interest rate	0.09%	2.40%	0.40%	0.40%	0.90%	0.80%
Volatility of stock		73.00%	59.00%	72.00%	75.00%	79.00%
Forfeiture rate		0.00%	0.00%	0.00%	16.00%	16.00%

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.D.2)

-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)(i)

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

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section D

-Subsection 2

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ 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 (f)(2)(ii)

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Forfeiture Interest Rate

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No definition available.

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