Note 11. Shareholder's Equity (Detail) - Black-Scholes-Merton Option Valuation Assumptions (USD $)	12 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Expected option life in years	6 years	6 years 6 months
Expected volatility	65.00%	56.00%
Expected dividend rate	0.00%	0.00%
Risk free interest rate	1.13%	1.86%
Weighted average fair value of options granted during the year (in Dollars per share)	$ 0.51	$ 0.67
Minimum [Member]
Option exercise prices (in Dollars per share)	$ 0.59	$ 1.00
Maximum [Member]
Option exercise prices (in Dollars per share)	$ 1.48	$ 1.58

Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award.

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-Subparagraph (SAB TOPIC 14.D.2)

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-Name Staff Accounting Bulletin (SAB)

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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

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- Definition

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

+ References

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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