| 5. Property and Equipment (Details 2) (USD $) | Apr. 30, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | 
|---|---|---|---|
| 2014 | $ 105,246 | ||
| 2015 | 65,017 | ||
| 2016 | 27,730 | ||
| 2017 | 9,095 | ||
| Total | 208,095 | 253,571 | 369,831 | 
| Computer software [Member] | |||
| 2014 | 303,629 | ||
| 2015 | 303,629 | ||
| 2016 | 302,782 | ||
| 2017 | 180,050 | ||
| 2018 | 41,453 | ||
| Total | $ 1,131,543 | 
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- Definition Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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