v3.20.2
SHARE-BASED COMPENSATION - Restricted Stock Units (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 9 Months Ended
Sep. 30, 2020
Sep. 30, 2020
Weighted Average Remaining Contractual Term (Years)    
Weighted average remaining contractual terms, vested and deferred 8 months 12 days  
RSUs    
Number of Restricted Stock Units    
Beginning of period balance (in shares) 3,861  
Number of RSUs awarded (in shares) 580  
Number of RSUs released (in shares) (1,599)  
Number of RSUs forfeited (in shares) (190)  
End of period balance (in shares) 3,861 2,652
RSUs vested and expected to vest (in shares)   2,652
RSUs exercisable (vested and deferred) (in shares)   41
Weighted average remaining recognition period in years 2 years  
Unamortized compensation expense $ 12,073  
Weighted Average Purchase Price    
Options weighted average purchase price (in dollars per shares)   $ 0
Vested and expected to vest weighted average purchase price (in dollars per shares)   0
Other than options weighted average purchase price exercisable, (in dollars per shares)   $ 0
Weighted Average Remaining Contractual Term (Years)    
Weighted average remaining contractual terms 1 year 2 months 12 days  
Weighted average remaining contractual terms, vested and expected 1 year 2 months 12 days  
Weighted average remaining contractual terms, vested and deferred 0 years  
Intrinsic Value    
Aggregate intrinsic value of restricted stock units   $ 4,296
Aggregate intrinsic vested and expected to vest   4,296
Aggregate intrinsic (vested and deferred)   $ 67