NET INCOME (LOSS) PER COMMON SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Numerator for Basic loss per share:
Net loss	$ (5,619)	$ 1,051	$ (8,392)	$ (7,537)
Preferred dividends	(13)	(13)	(25)	(25)
Net loss available to common shareholders	(5,632)	1,038	(8,417)	(7,562)
Numerator for Diluted loss per share:
Net loss	(5,619)	1,038	(8,392)	(7,537)
Preferred dividends	(13)	13	(25)	(25)
Interest expense on convertible debt		1
Net income (loss) for diluted earnings (loss) per share	$ (5,632)	$ 1,052	$ (8,417)	$ (7,562)
Denominator for Basic Loss per share:
Denominator for basic loss per share weighted-average shares outstanding	78,581,502	68,554,014	77,718,825	68,271,465
Effect of dilutive securities		13,911,199
Denominator for Diluted Loss per share:
Denominator for diluted loss per share weighted-average shares outstanding	78,468,257	82,465,213	77,718,825	68,271,465
Basic income (loss) per share:
Net income (loss)	$ (0.07)	$ 0.02	$ (0.11)	$ (0.17)
Preferred dividends	$ 0	$ 0	$ 0	$ (0.01)
Net income (loss) available to common shareholders	$ (0.07)	$ 0.02	$ (0.11)	$ (0.18)
Diluted income (loss) per share:
Net income (loss)	$ (0.07)	$ 0.01	$ (0.11)	$ (0.18)