EMPLOYEE STOCK COMPENSATION - Summary of SARs Activity (Details) - Stock appreciation rights - 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)	1,559,240		1,561,681
Granted (in shares)	0		0
Exercised (in shares)	0		0
Forfeited (in shares)	(193)		(2,634)
Outstanding at end of period (in shares)	1,559,047	1,559,240	1,559,047	1,561,681
Exercisable at end of period (in shares)	1,550,978		1,550,978
Weighted- Average Exercise Price per Share
Outstanding at beginning of period (in dollars per share)	$ 11.60		$ 11.60
Granted (in dollars per share)	0.00		0.00
Exercised (in dollars per share)	0.00		0.00
Forfeited (in dollars per share)	10.09		10.09
Outstanding at end of period (in dollars per share)	11.60	$ 11.60	11.60	$ 11.60
Exercisable at end of period (in dollars per share)	$ 11.61		$ 11.61
Weighted- Average Remaining Contract Term
Outstanding	5 years 10 months 21 days	6 years 4 months 24 days	5 years 10 months 21 days	6 years 7 months 21 days
Forfeited	5 years 10 months 21 days		5 years 10 months 21 days
Exercisable at end of period	5 years 10 months 21 days		5 years 10 months 21 days
Aggregated Intrinsic Value
Outstanding	$ 9,132	$ 10,132	$ 9,132	$ 4,716
Granted
Exercised
Forfeited
Exercisable at end of period	$ 9,073		$ 9,073
Number of Shares
Outstanding at beginning of period (in shares)	9,366		25,963
Granted (in shares)	0		0
Vested (in shares)	(1,104)		(15,260)
Forfeited (in shares)	(193)		(2,634)
Outstanding at end of period (in shares)	8,069	9,366	8,069	25,963
Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of period (in dollars per share)	$ 10.09		$ 10.09
Granted (in dollars per share)	0.00		0.00
Vested (in dollars per share)	10.09		10.09
Forfeited (in dollars per share)	10.09		10.09
Outstanding at end of period (in dollars per share)	$ 10.09	$ 10.09	$ 10.09	$ 10.09