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STOCK-BASED COMPENSATION (Details) (USD $)
6 Months Ended
Jun. 30, 2012
May 30, 2012
Jun. 30, 2012
Stock options
Jun. 30, 2012
Warrants
STOCK-BASED COMPENSATION        
Number of shares of the entity's common stock authorized for issuance under the plan before amendment   1,000,000    
Number of shares of the entity's common stock authorized for issuance under the plan   1,800,000    
Number of shares that remained available for issuance under the plan 945,391      
Stock-based compensation        
Options granted under the plan (in shares)     354,782  
Weighted average exercise price of options granted (in dollars per share)     $ 4.10  
Options expired and cancelled (in shares)     86,994  
Warrants expired (in shares)       65,872
Weighted average exercise price of warrants expired (in dollars per share)       $ 235.62