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STOCK BASED COMPENSATION (Details 3) (USD $)
 6 Months Ended 203 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
May 23, 2012
Jun. 30, 2013
Stock options
security
Jun. 30, 2012
Stock options
Dec. 31, 2012
Stock options
Jun. 30, 2013
Stock options
Minimum
Jun. 30, 2013
Stock options
Maximum
Stock-based compensation                  
Number of shares reserved for issuance       1,428,571          
Number of shares reserved for issuance before amendment       742,857          
Expiration period         10 years        
Vesting period 4 years       4 years        
Cash proceeds   $ 34,000 $ 267,000     $ 34,000      
Number of options outstanding                  
Options outstanding at the beginning of the period (in shares)         463,023        
Granted (in shares)         32,697 235,000      
Exercised (in shares)         0 77,062      
Cancelled / forfeited (in shares)         (8,001)        
Options outstanding at the end of the period (in shares)         487,719   463,023    
Unvested at the end of the period (in shares)         85,606        
Vested and exercisable at the end of the period (in shares)         402,113        
Weighted average exercise price                  
Options outstanding at the beginning of the period (in dollars per share)         $ 26.61        
Granted (in dollars per share)         $ 3.01        
Cancelled / forfeited (in dollars per share)         $ 17.10        
Options outstanding at the end of the period (in dollars per share)         $ 25.18   $ 26.61    
Unvested at the end of the period (in dollars per share)         $ 6.47        
Vested and exercisable at the end of the period (in dollars per share)         $ 29.20        
Weighted average remaining contractual term                  
Options outstanding         5 years 5 months 16 days   5 years 6 months 29 days    
Unvested at the end of the period         8 years 9 months 11 days        
Vested and exercisable at the end of the period         4 years 9 months 4 days        
Aggregate intrinsic value                  
Options outstanding         3,000   347,000    
Vested and exercisable at the end of the period         3,000        
Stock based compensation, additional disclosures                  
Forfeiture rate (as a percent)               0.00% 30.00%
Expense recognized due to revision of forfeiture rate           $ 1,000      
Change in forfeiture rate (as a percent) 0.00%   0.00%            
Number of Federal Reserve securities whose weighted average is used for calculation of weighted average risk-free interest rate         2