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VARIABLE INTEREST ENTITY (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 14, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Variable Interest Entity [Line Items] |  |  |  |  |
Revenues |  |  | $ 182,040,968 | $ 182,571,852 | $ 108,999,805
Net income (loss) |  |  | $ 12,956,889 | $ 16,649,176 | $ (70,943,484)
Variable Interest Entity Primary Beneficiary [Member] |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Revenues | [1] |  |  |  |
Operating costs and expenses |  |  |  |  | $ 150,147,024
Net income (loss) |  |  |  |  | $ (150,147,024)
Lease term |  | 3 years |  |  |
Annual rental payment |  | $ 1,000,000 |  |  |
[1] | The lease term was amended at the beginning of 2013 and reduced the rent to $0 per month and was later terminated on December 30, 2013.

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