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Analysis of Debentures Payable (Detail) (USD $)
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Sep. 30, 2012
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Dec. 31, 2011
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Feb. 28, 2011
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Dec. 31, 2010
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|---|---|---|---|---|
| Debt Instrument [Line Items] | ||||
| Stated value of debentures payable | $ 400,000 | $ 400,000 | $ 200,000 | $ 200,000 |
| Less unamortized value of warrants issued | (43,294) | (85,720) | ||
| Debentures payable | $ 356,706 | $ 314,280 |