STOCK-BASED COMPENSATION Restricted stock (Details) (Restricted stock, USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average service period	1 year 7 months 19 days
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 578
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Non-vested restricted stock (units), weighted average grant date fair value, At the Beginning of the Year	$ 3.00	$ 4.87
Granted, weighted average grant date fair value	$ 3.87	$ 2.42
Vested, weighted average grant date fair value	$ 5.32	$ 5.15
Forfeited, weighted average grant date fair value	$ 2.31	$ 4.26
Non-vested restricted stock (units), weighted average grant date fair value, At the End of the Period	$ 2.80	$ 3.36
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Non-vested restricted stock (units), number of shares of restricted stock (unit), At the Beginning of the Year	997,802	1,028,916
Granted, Number of share of restricted stock (units)	5,000	555,221
Vested, number of share of restricted stock (units)	(168,574)	(374,225)
Forfeited, number of share of restricted stock	(445,416)	(398,805)
Non-vested restricted stock (units), number of shares of restricted stock (unit), At the End of the Period	388,812	811,107