STOCK-BASED COMPENSATION - SCHEDULE OF STANDARD AND MARKET-BASED STOCK OPTIONS ACTIVITY (Detail)	9 Months Ended
	Sep. 30, 2017 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)	3,421,121
Granted (in shares)	326,978
Exercised (in shares)	(58,023)
Forfeited (in shares)	(70,306)
Expired (in shares)	(149,816)
Ending outstanding balance (in shares)	3,469,954
Aggregate intrinsic value of options exercised (in dollars) | $	$ 134,000
Weighted average fair value of options granted (in dollars per share) | $ / shares	$ 3.96
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)	225,000
Granted (in shares)	120,830
Exercised (in shares)	0
Canceled (in shares)	0
Ending outstanding balance (in shares)	345,830
Aggregate intrinsic value of options exercised (in dollars) | $	$ 0