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STOCKHOLDERS' EQUITY (Details 2) - Unvested Restricted Shares [Member] - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense associated with restricted stock $ 1,489,728 $ 1,648,397 $ 7,485,183 $ 3,347,362
Allocated Share-based Compensation Expense $ 1,489,728 $ 1,648,397 $ 7,485,183 $ 3,347,362