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STOCK BASED COMPENSATION - Summary of RSU Activity (Detail) - Restricted Stock Units (RSUs)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
$ / shares
shares
Number of Units  
Non-vested as of January 1, 2019 | shares 429,810
Granted | shares 266,033
Vested and Released | shares (109,142)
Forfeited | shares (147,621)
Non-vested as of December 31, 2019 | shares 439,080
Weighted Average Grant Date Fair Value Per Share  
Non-vested as of January 1, 2019 | $ / shares $ 72.02
Granted | $ / shares 48.68
Vested and Released | $ / shares 72.83
Forfeited | $ / shares 67.27
Non-vested as of December 31, 2019 | $ / shares $ 59.09
Weighted Average Remaining Contractual Life  
Non-vested as of December 31, 2019 1 year 4 months 6 days
Total Aggregate Intrinsic Value  
Non-vested as of December 31, 2019 | $ $ 28.0