EQUITY-BASED COMPENSATION - Stock Options Granted under Equity Plan (Details 2) - Stock options - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Feb. 14, 2011	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2011
Equity-based compensation
Granted (in shares)	940,000
Exercise price of options granted (in dollars per share)	$ 9.75
Vesting period	5 years
Assumptions used to estimate the fair value of options granted
Expected dividend yield (as a percent)					5.09%
Expected stock price volatility (as a percent)					56.60%
Risk-free interest rate (as a percent)					2.57%
Expected life of options					6 years 6 months
Weighted average estimated fair value of options at grant date per share (in dollars per share)					$ 3.48
Number of Options
Outstanding at the beginning of year (in shares)		470,000	846,000
Exercised (in shares)		(235,000)	(376,000)
Outstanding at end of year (in shares)		235,000	470,000	846,000
Exercisable at end of year (in shares)		235,000
Weighted Average Exercise Price
Outstanding at beginning of year (in dollars per share)		$ 9.75	$ 9.75
Exercised (in dollars per share)		9.75	9.75
Outstanding at end of year (in dollars per share)		9.75	$ 9.75	$ 9.75
Exercisable at end of year (in dollars per share)		$ 9.75
Weighted Average Remaining Contractual Terms
Outstanding		4 years 2 months 12 days
Exercisable		4 years 2 months 12 days
Aggregate Intrinsic Value (Current Value Less Exercise Price)
Outstanding		$ 1,476	$ 1,000	$ 2,300
Exercisable		1,476	800	1,400
Stock options
Total fair value of options vested		300	900	700
Intrinsic value of options exercised		$ 1,000	$ 1,300	$ 100