v3.19.2

SHARE-BASED COMPENSATION - RSU Activity - Summary of Change (Details) $ / shares in Units, shares in Thousands, $ in Thousands | 6 Months Ended
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Jun. 30, 2019 USD ($) $ / shares shares
Number of Restricted Stock Units [Roll Forward] |
RSUs beginning | 3,685
RSUs awarded | 1,648
RSUs released | (1,367)
RSUs forfeited | (280)
RSUs ending | 3,686
Weighted Average Purchase Price RSUs | $ / shares | $ 0
Weighted Average Remaining Contractual Term (Years) RSUs | 1 year 8 months 12 days
Aggregate Intrinsic Value RSUs | $ | $ 21,308
Number of RSUs vested and expected to vest | 3,686
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 | $ | $ 21,306
Number of RSUs exercisable | 41
Weighted Average Purchase Price of RUSs exercisable | $ / shares | $ 0
Aggregate Intrinsic Value RSUs exercisable | $ | $ 239
Weighted average remaining recognition period in years | 2 years 8 months 12 days
Unamortized compensation expense, net of estimated forfeitures | $ | $ 25,392

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