CONVERTIBLE REDEEMABLE PREFERRED STOCK (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Jun. 25, 2013
Temporary Equity [Line Items]
Temporary equity	$ 269,370		$ 269,370		$ 264,593
Preferred share accretion paid in kind	$ (2,330)	$ (2,405)	$ (4,777)	$ (4,762)
Series B Preferred Shares
Temporary Equity [Line Items]
Preferred stock, shares issued	200,000		200,000		200,000
Preferred stock, par value (in dollars per share)	$ 0.08		$ 0.08		$ 0.08	$ 0.08
Convertible Preferred Stock, Estimated Common Stock Issued in Future Conversion	111,100,000		111,100,000
Sale of stock, price per share						$ 1,000
Preferred stock, conversion price	$ 2.42		$ 2.42
4 - 5 years [Member] | Series B Preferred Shares
Temporary Equity [Line Items]
Preferred stock, dividend rate, percentage	3.75%