SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator for basic and diluted loss per share:
Net loss	$ (1,948)	$ (2,228)	$ (2,074)	$ (1,690)	$ (1,796)	$ 339	$ (5,619)	$ (2,773)	$ 75	$ (2,726)	$ 1,051	$ (8,590)	$ (7,940)	$ (9,849)	$ (10,190)
Preferred dividends													(51)	(51)	(51)
Net loss available to common shareholders													(7,991)	(9,900)	(10,241)
Denominator for basic loss per share weighted-average shares outstanding	93,384,834	93,162,548	91,930,400	88,604,221	85,594,118	83,750,636	78,580,502	78,846,563	76,561,858	70,308,374	68,544,014	67,988,916	91,795,971	81,231,962	70,894,916
Effect of dilutive securities
Denominator for diluted loss per share weighted-average shares outstanding													91,795,971	81,231,962	70,894,915
Basic and diluted loss per share:
Net loss													$ (0.09)	$ (0.12)	$ (0.14)
Preferred dividends
Net loss available to common shareholders													$ (0.09)	$ (0.12)	$ (0.14)