SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Common shares not included in the computation of diluted net loss per share
Potentially issuable common shares not included in the computation of diluted net loss per share because they would have an anti-dilutive effect	7,394,000	7,180,000	7,306,000
Additional disclosure
Number of shares of common stock that can be purchased through issuance of warrants under a licensing agreement	250,000	250,000	750,000
Number of shares of common stock that can be purchased through issuance of warrants under a consulting agreement	75,000	75,000	75,000
Shares issuable upon exercise of stock options
Common shares not included in the computation of diluted net loss per share
Potentially issuable common shares not included in the computation of diluted net loss per share because they would have an anti-dilutive effect	6,182,000	6,454,000	6,217,000
Shares issuable upon exercise of outstanding warrants
Common shares not included in the computation of diluted net loss per share
Potentially issuable common shares not included in the computation of diluted net loss per share because they would have an anti-dilutive effect	325,000	325,000	825,000
Shares issuable upon the release of restricted stock awards
Common shares not included in the computation of diluted net loss per share
Potentially issuable common shares not included in the computation of diluted net loss per share because they would have an anti-dilutive effect	814,000	401,000	264,000
Shares issuable upon exercise of restricted stock awards related to licensing agreement
Common shares not included in the computation of diluted net loss per share
Potentially issuable common shares not included in the computation of diluted net loss per share because they would have an anti-dilutive effect	73,000