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Quarterly Financial Data (Unaudited) (Summarized Quarterly Financial Information (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total Income (Loss) | $ (678,456) | $ 5,892,884 | $ (2,281,454) | $ 3,488,007 | $ (1,848,278) | $ 8,792,836 | $ (25,764,862) | $ 9,471,904 | $ 6,420,981 | $ (9,348,400) | $ 4,424,226
Total Expenses | 170,197 | 205,028 | 220,417 | 247,095 | 220,660 | 248,705 | 265,297 | 315,716 | 842,737 | 1,050,378 | 1,637,724
Net Income (Loss) | $ (848,653) | $ 5,687,856 | $ (2,501,871) | $ 3,240,912 | $ (2,068,938) | $ 8,544,131 | $ (26,030,159) | $ 9,156,188 | $ 5,578,244 | $ (10,398,778) | $ 2,786,502
Net Income (Loss) per Share | $ (0.36) | $ 3.12 | $ (0.96) | $ 1.22 | $ (0.59) | $ 2.50 | $ (7.91) | $ 2.35 | $ 3.02 | $ (3.65) | $ 0.55

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