STOCK-BASED COMPENSATION - SCHEDULE OF STANDARD AND MARKET-BASED STOCK OPTIONS ACTIVITY (Detail)	6 Months Ended
	Jun. 30, 2016 USD ($) $ / shares shares
Standard Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Beginning outstanding balance (in shares)	3,596,533
Granted (in shares)	444,769
Exercised (in shares)	(280,676)
Forfeited (in shares)	(219,457)
Expired (in shares)	(244,688)
Ending outstanding balance (in shares)	3,296,481
Aggregate intrinsic value of options exercised (in dollars) | $	$ 700,000
Weighted average fair value of options granted (in dollars per share) | $ / shares	$ 3.72
Market Condition Based Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Beginning outstanding balance (in shares)	200,000
Granted (in shares)	75,000
Exercised (in shares)	0
Forfeited and canceled (in shares)	(50,000)
Ending outstanding balance (in shares)	225,000
Aggregate intrinsic value of options exercised (in dollars) | $	$ 0
Weighted average fair value of options granted (in dollars per share) | $ / shares	$ 3.68