EQUITY-BASED COMPENSATION - Time-Based Restricted Stock Awards (Details 3) - Restricted Stock Awards - Time-Based - USD ($) $ / shares in Units, $ in Thousands							12 Months Ended
	Sep. 02, 2016	Mar. 08, 2016	Feb. 24, 2016	Apr. 24, 2015	Mar. 03, 2015	May 28, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Number of Shares
Non-vested at the beginning of year (in shares)							250,011	181,116
Granted (in shares)							192,123	166,340
Vested (in shares)							(82,869)	(97,445)
Forfeited (in shares)							(1,420)
Non-vested at end of year (in shares)							357,845	250,011	181,116
Weighted Average Grant Date Fair Value
Non-vested at beginning of year (in dollars per share)							$ 12.03	$ 9.81
Granted (in dollars per share)							11.36	13.53
Vested (in dollars per share)							11.06	10.46
Forfeited (in dollars per share)							10.27
Non-vested at end of year (in dollars per share)							$ 11.90	$ 12.03	$ 9.81
Aggregate Current Value
Non-vested outstanding							$ 5,736
Total fair value of awards vested							$ 900	$ 1,000	$ 800
Employees [Member]
Equity-based compensation
Vesting period	4 years		4 years
Number of Shares
Granted (in shares)	406		22,010
Employees [Member] | Period one
Equity-based compensation
Vesting percentage	20.00%		20.00%
Employees [Member] | Period two
Equity-based compensation
Vesting percentage	20.00%		20.00%
Employees [Member] | Period three
Equity-based compensation
Vesting percentage	20.00%		20.00%
Employees [Member] | Period four
Equity-based compensation
Vesting percentage	40.00%		40.00%
Executive officers and management
Equity-based compensation
Vesting period					3 years	3 years
Number of Shares
Granted (in shares)					149,410	116,981
Executive officers and management | Continued service on March 9, 2018, or upon a change in control
Number of Shares
Granted (in shares)					37,230
Executive officers and management | Period one
Equity-based compensation
Vesting percentage					25.00%	25.00%
Executive officers and management | Period two
Equity-based compensation
Vesting percentage					25.00%	25.00%
Executive officers and management | Period three
Equity-based compensation
Vesting percentage					50.00%	50.00%
Executive officers
Number of Shares
Granted (in shares)		169,707		16,930
Executive officers | Period one
Equity-based compensation
Vesting percentage		25.00%
Executive officers | Period two
Equity-based compensation
Vesting percentage		25.00%
Executive officers | Period three
Equity-based compensation
Vesting percentage		50.00%