STOCK BASED COMPENSATION PLAN AND WARRANTS, PRICE RANGE (Details) (USD $)	3 Months Ended
	Mar. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding (in shares)	9,545,412
Weighted average remaining contractual life	3 years 2 months 12 days
Weighted average exercise price (in dollars per share)	$ 1.16
Options exercisable (in shares)	7,955,531
$0.01 - $1.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices lower (in dollars per share)	$ 0.01
Range of exercise prices upper (in dollars per share)	$ 1.50
Options outstanding (in shares)	7,213,877
Weighted average remaining contractual life	2 years 9 months 18 days
Weighted average exercise price (in dollars per share)	$ 0.97
Options exercisable (in shares)	7,113,897
$1.51 - $3.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices lower (in dollars per share)	$ 1.51
Range of exercise prices upper (in dollars per share)	$ 3.00
Options outstanding (in shares)	2,196,535
Weighted average remaining contractual life	4 years 6 months
Weighted average exercise price (in dollars per share)	$ 1.66
Options exercisable (in shares)	706,634
$3.00 - $5.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices lower (in dollars per share)	$ 3.01
Range of exercise prices upper (in dollars per share)	$ 5.00
Options outstanding (in shares)	135,000
Weighted average remaining contractual life	4 years 7 months 6 days
Weighted average exercise price (in dollars per share)	$ 3.11
Options exercisable (in shares)	135,000