STOCK-BASED COMPENSATION - SCHEDULE OF INFORMATION REGARDING RESTRICTED STOCK UNITS OUTSTANDING (Detail) - RSUs outstanding - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs outstanding, number (in shares)	1,210,086	508,880
RSUs vested and expected to vest using estimated forfeiture rates, number (in shares)	938,701
RSUs outstanding, weighted average remaining contractual life (years)	1 year 4 months 6 days
RSUs vested and expected to vest using estimated forfeiture rates, Weighted Average Remaining Contractual Life (years)	1 year 3 months
RSUs outstanding, aggregate intrinsic value (in dollars)	$ 14.5
RSUs vested and expected to vest using estimated forfeiture rates, aggregate intrinsic value (in dollars)	$ 11.2