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           4. Stock-based Compensation (Details - Stock Option Activity) (Stock Options, USD $) 
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        3 Months Ended | 
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           Dec. 31, 2013 
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           Stock Options 
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| Number of Shares | |
| Outstanding, beginning balance | 675,000 | 
| Granted | 0 | 
| Exercised | 0 | 
| Forfeited | 0 | 
| Outstanding, ending balance | 675,000 | 
| Exercisable | 75,000 | 
| Outstanding, ending balance | $ 2.82 | 
| Exercisable | $ 3.33 | 
| Weighted Average Remaining Contractual Life | |
| Outstanding, end of period | 5 years 7 months 6 days | 
| Exercisable | 4 years 24 days | 
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- Details 
          
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- Details 
          
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- Definition 
          The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Weighted average remaining contractual term of exercisable stock options, 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 
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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