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Derivatives (Details Textual)
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9 Months Ended | 12 Months Ended | ||||
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Sep. 30, 2013
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Dec. 31, 2012
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| Derivatives Textual [Abstract] | ||||||
| Expected dividend yield | [1] | [1] | ||||
| Description of probability of stock offering | Management has determined that the probability of a stock offering is 25% - 40% for each quarter of the next five years. | |||||
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