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SHAREHOLDERS' EQUITY (Details) (USD $)
 0 Months Ended 12 Months Ended 2 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended
Jan. 11, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Jul. 31, 2010
Public offering
item
Dec. 31, 2012
May 2008 equity infusion
Oct. 31, 2011
BTIG
ATM Sales Agreement
Dec. 31, 2012
BTIG
ATM Sales Agreement
Dec. 31, 2011
BTIG
ATM Sales Agreement
Dec. 31, 2011
BTIG
ATM Sales Agreement
Maximum
Oct. 31, 2011
BTIG
ATM Sales Agreement
Maximum
Sep. 05, 2012
RCF
Private placement
Mar. 09, 2012
RCF
Private placement
SHAREHOLDERS' EQUITY                          
Aggregate offering price of the shares of common stock available to be sold under ATM Sales Agreement               $ 9,000,000   $ 15,000,000 $ 15,000,000    
Percentage of commission to be paid on the gross proceeds from the sale of shares under ATM Sales Agreement             3.00%            
Gross proceeds from sale of shares of common stock   20,264,692 352,855 19,138,091 19,100,000     5,400,000 325,000        
Shares of common stock sold         3,540,000     973,000 47,700        
Shares of common stock sold under private placement                       970,000 1,000,000
Proceeds from sale of shares of common stock                       $ 5,000,000 $ 10,000,000
Price per share under private placement (in dollars per share) $ 8.00                     $ 5.16 $ 9.75
Number of underwritten public offerings         2                
Warrants                          
Shares of common stock that can be purchased upon exercise of warrants           990,000              
Exercise price of warrants (in dollars per share)           $ 57.80              
Deferred Compensation                          
Maximum percentage of compensation permitted to be deferred for the years 1999 through 2004 100.00%                        
Restricted stock issued in lieu of the cash due under the deferred compensation plans (in shares) 88,500