EMPLOYEE STOCK COMPENSATION - Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2016	Dec. 31, 2015
Number of Shares
Outstanding at beginning of period (in shares)	1,109,257		960,879
Granted (in shares)	0		320,000
Cash settled (in shares)	0		(55,826)
Exercised (in shares)	(51,666)		(51,666)
Forfeited (in shares)	(89,000)		(202,743)
Expired (in shares)	0		(2,053)
Outstanding at end of period (in shares)	968,591	1,109,257	968,591	960,879
Exercisable at end of period (in shares)	442,989		442,989
Weighted- Average Exercise Price per Share
Outstanding at beginning of period (in dollars per share)	$ 13.84		$ 12.86
Granted (in dollars per share)	0.00		16.78
Cash settled (in dollars per share)	0.00		14.33
Exercised (in dollars per share)	11.48		11.48
Forfeited (in dollars per share)	14.22		13.84
Expired (in dollars per share)	0.00		13.88
Outstanding at end of period (in dollars per share)	13.95	$ 13.84	13.95	$ 12.86
Exercisable at end of period (in dollars per share)	$ 12.67		$ 12.67
Weighted- Average Remaining Contract Term
Outstanding	8 years 5 months 27 days	8 years 3 months 14 days	8 years 4 months 10 days	6 years 10 months 27 days
Granted	0 years		9 years 5 months 8 days
Cash settled	0 years		2 years 21 days
Exercised	6 years 4 months 2 days		8 years 6 months 23 days
Forfeited	7 years 2 months 24 days		4 years 11 months 8 days
Expired	0 years		0 years
Exercisable at end of period	6 years 6 months 27 days		6 years 6 months 27 days
Aggregated Intrinsic Value (In thousands)
Outstanding	$ 3,417	$ 4,714	$ 3,417	$ 796
Exercisable at end of period	$ 2,120		$ 2,120