v2.4.0.8
SHARE-BASED COMPENSATION - Options Activity (Details) (USD $)
 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Options activity [Roll Forward]    
Options beginning 742,550  
Options granted 5,000  
Options exercised (153,782)  
Options forfeited (3,625)  
Options expired (11,875)  
Options ending 578,268  
Weighted average exercise price - beginning $ 2.39  
Weighted average exercise price - options granted $ 8.72  
Weighted average exercise price - options exercised $ 1.44  
Weighted average exercise price - options forfeited $ 1.34  
Weighted average exercise price - options expired $ 10.16  
Weighted average exercise price - ending $ 2.54  
Weighted Average Remaining Contractual Term (Years) Options 5 years 3 months 18 days  
Intrinsic Value Options $ 3,938,379  
Options vested and expected to vest 577,466  
Options vested and exercisable 571,018  
Weighted average exercise price options vested and expected to vest $ 2.53  
Weighted average exercise price options vested and exerciable $ 2.47  
Weighted average remaining contractual period (Years) options vested and expected to vest 5 years 3 months 18 days  
Weighted average remaining contractual period (years) options vested and exercisable 5 years 2 months 12 days  
Intrinsic value options vested and expected to vest 3,938,280  
Intrinsic value options vested and exercisable 3,932,860  
Weighted average remaining recognition period in years 2 years 8 months 12 days  
Unamortized compensation expense, net of estimated forfeitures 27,367  
Cash received from exercise price of options exercised $ 219,000 $ 120,000