v3.5.0.2

SHARE-BASED COMPENSATION - RSU Activity - Summary of Change (Details) | 6 Months Ended
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Jun. 30, 2016 USD ($) $ / shares shares
Number of Restricted Stock Units [Roll Forward] |
RSUs beginning | 1,590,417
RSUs awarded | 1,116,585
RSUs released | (595,717)
RSUs forfeited | (8,950)
RSUs ending | 2,102,335
Weighted Average Purchase Price RSUs | $ / shares | $ 0
Weighted Average Remaining Contractual Term (Years) RSUs | 1 year 10 months 24 days
Aggregate Intrinsic Value RSUs | $ | $ 28,528,686
Number of RSUs vested and expected to vest | 1,905,785
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 10 months 24 days
Aggregate Intrinsic Value RSUs vested and expected to vest | $ | $ 25,198,200
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 | $ | $ 663,302
Weighted average remaining recognition period in years | 2 years 8 months 12 days
Unamortized compensation expense, net of estimated forfeitures | $ | $ 14,079,435

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