v3.4.0.3
SHARE-BASED COMPENSATION - RSU Activity - Summary of Change (Details)
 3 Months Ended
Mar. 31, 2016
USD ($)
$ / shares
shares
Number of Restricted Stock Units [Roll Forward]  
RSUs beginning 1,590,417
RSUs awarded 439,585
RSUs released (581,967)
RSUs forfeited (7,450)
RSUs ending 1,440,585
Weighted Average Purchase Price RSUs | $ / shares $ 0
Weighted Average Remaining Contractual Term (Years) RSUs 1 year 9 months 18 days
Aggregate Intrinsic Value RSUs | $ $ 15,241,389
Number of RSUs vested and expected to vest 1,317,409
Weighted Average Purchase Price of RSUs vested and expected to vest | $ / shares $ 0
Weighted Average Remaining Contractual Term (Years) of RUSs vested and expected to vest 1 year 8 months 12 days
Aggregate Intrinsic Value RSUs vested and expected to vest | $ $ 13,421,043
Number of RSUs exercisable 48,880
Weighted Average Purchase Price of RUSs exercisable | $ / shares $ 0
Weighted Average Remaining Contractual Term (Years) of RUSs exercisable 0 years
Aggregate Intrinsic Value RSUs exercisable | $ $ 517,150
Weighted average remaining recognition period in years 2 years 7 months 6 days
Unamortized compensation expense, net of estimated forfeitures | $ $ 10,524,827