| Note 4. Stock-based Compensation (Narrative) (USD $) | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
| Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | |
| Share-based Compensation [Abstract] | ||||
| Stock based compensation expense | $ 75,190 | $ 13,154 | $ 107,198 | $ 16,942 | 
| Unrecognized compensation expense | $ 333,944 | $ 333,944 | ||
| Weighted average period | 1 year 10 months 24 days | |||
| X | ||||||||||
| 
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
 | 
| X | ||||||||||
| 
- Definition Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
 | 
| X | ||||||||||
| 
- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, 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 
 | 
| X | ||||||||||
| 
- Details 
 |