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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Net Loss Per Share        
Potential dilutive securities excluded from diluted loss per share calculation (in shares) 786,999 8,310 3,723,521 6,533
Minimum
       
Marketable securities        
Original maturity period of marketable securities     6 months  
Maximum
       
Marketable securities        
Original maturity period of marketable securities     17 months