STOCK-BASED COMPENSATION (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
STOCK-BASED COMPENSATION
Stock option expense	$ 0.3	$ 0.5	$ 0.7	$ 2.1
Principal assumptions used in applying the Black-Scholes option pricing model for the awards
Risk-free interest rate (as a percent)	0.50%		0.50%	0.97%
Volatility factor of the expected market price of common stock (as a percent)	66.00%		66.00%	75.00%
Weighted-average expected life of option	3 years 6 months		3 years 6 months	6 years
Weighted-average grant date fair value (in dollars per share)	$ 1.01		$ 1.01	$ 3.80
Certain employees, directors and consultants
STOCK-BASED COMPENSATION
Stock options granted (in shares)			1.7
Exercise price of options granted (in dollars per share)			$ 2.25
Vesting period of options			3 years
Exercise period of options			5 years
Chief Operating Officer
STOCK-BASED COMPENSATION
Stock options granted (in shares)				0.3
Exercise price of options granted (in dollars per share)				$ 5.80
Vesting period of options				3 years
Exercise period of options				10 years