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STOCK-BASED COMPENSATION (Details 2) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense recorded during period $ 706,060 $ 625,874
Total unrecognized compensation expense remaining $ 5,829,320 $ 4,038,554
Remaining average recognition period (in years) 2 years 4 months 24 days 2 years 4 months 24 days