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Summary of Significant Accounting Policies (Details 3) (USD $)
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3 Months Ended |
12 Months Ended |
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Dec. 31, 2014
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Sep. 30, 2014
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Jun. 30, 2014
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Mar. 31, 2014
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Summary of Significant Accounting Policies [Abstract] |
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| Net income from continuing operations |
$ 33,335 |
$ 14,195 |
$ 14,842 |
$ 23,389 |
$ 29,820 |
$ 5,044 |
$ 7,939 |
$ 4,333 |
$ 85,760,705 |
$ 47,135,794 |
$ 24,280,268 |
| Net income from discontinued operations |
0 |
0 |
0 |
0 |
12,449 |
12,363 |
17,759 |
9,340 |
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51,910,662 |
84,494,428 |
| Net income |
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$ 85,760,705 |
$ 99,046,456 |
$ 108,774,696 |
| Weighted average number of ordinary shares outstanding (Basic and diluted) (in shares) |
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79,055,053 |
78,772,743 |
77,215,000 |
| Earnings per share from continuing operation (Basic and diluted) (in dollars per share) |
$ 0.42 |
$ 0.18 |
$ 0.19 |
$ 0.30 |
$ 0.38 |
$ 0.06 |
$ 0.10 |
$ 0.06 |
$ 1.08 |
$ 0.60 |
$ 0.32 |
| Earnings per share from discontinued operation (Basic and diluted) (in dollars per share) |
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$ 0.00 |
$ 0.66 |
$ 1.09 |
| Earnings per ordinary share (Basic and diluted) (in dollars per share) |
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$ 1.08 |
$ 1.26 |
$ 1.41 |