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Derivative Financial Instruments (Narrative) (Details) (USD $)
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9 Months Ended |
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Sep. 30, 2012
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Put Option [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |
| Gain (loss) on derivatives | $ (161,929) |
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Call Option [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |
| Gain (loss) on derivatives | (102,591) |
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Forward Contracts [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |
| Gain (loss) on derivatives | (715,536) |
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Contingent Dividend Payment [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | |
| Gain (loss) on derivatives | $ 580,200 |