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Nature of Operations and Going Concern (Narrative) (Details) (USD $)
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4 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
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Apr. 30, 2013
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Apr. 30, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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| Nature Of Operations And Going Concern Details Narrative [Abstract] | ||||
| Net Loss-Allocable to Common Shareholders | $ 1,402,982 | $ 2,250,498 | $ 6,048,113 | $ 2,222,899 |
| Negative Cash Flows from Operations | $ 918,941 | $ 1,132,264 | $ 4,522,710 | $ 1,679,330 |