STOCK-BASED COMPENSATION - SCHEDULE OF INFORMATION REGARDING STANDARD AND MARKET CONDITION BASED STOCK OPTIONS OUTSTANDING (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Standard Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock options outstanding	3,456,244	3,596,533
Options vested and expected to vest using estimated forfeiture rates, number (in shares)	3,298,519
Options exercisable, number (in shares)	2,216,349
Options outstanding, Weighted Average Exercise Price (in dollars per share)	$ 8.57
Options vested and expected to vest using estimated forfeiture rates, Weighted Average Exercise Price (in dollars per share)	8.51
Options exercisable, Weighted Average Exercise Price (in dollars per share)	$ 7.93
Options outstanding, Weighted Average Remaining Contractual Life (years)	4 years 25 days
Options vested and expected to vest using estimated forfeiture rates, Weighted Average Remaining Contractual Life (years)	3 years 11 months 15 days
Options exercisable, weighted average remaining contractual (years)	3 years 2 months 1 day
Options outstanding, aggregate intrinsic value	$ 3.6
Options vested and expected to vest using estimated forfeiture rates, Aggregate Intrinsic Value	3.6
Options exercisable, aggregate intrinsic value	$ 3.5
Market Condition Based Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock options outstanding	225,000	200,000
Options vested and expected to vest using estimated forfeiture rates, number (in shares)	201,915
Options exercisable, number (in shares)	37,500,000
Options outstanding, Weighted Average Exercise Price (in dollars per share)	$ 8.39
Options vested and expected to vest using estimated forfeiture rates, Weighted Average Exercise Price (in dollars per share)	8.37
Options exercisable, Weighted Average Exercise Price (in dollars per share)	$ 8.09
Options outstanding, Weighted Average Remaining Contractual Life (years)	6 years 3 months
Options vested and expected to vest using estimated forfeiture rates, Weighted Average Remaining Contractual Life (years)	6 years 2 months 23 days
Options exercisable, weighted average remaining contractual (years)	5 years 11 months 1 day	0 years
Options outstanding, aggregate intrinsic value	$ 0.0
Options vested and expected to vest using estimated forfeiture rates, Aggregate Intrinsic Value	0.0
Options exercisable, aggregate intrinsic value	$ 0.0