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NET LOSS PER COMMON SHARE DATA (Details 2)
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Options to purchase common stock
   
Anti-dilutive shares    
Anti-dilutive shares 1,811,941 2,081,774
Warrants
   
Anti-dilutive shares    
Anti-dilutive shares 2,215,680 636,276
Restricted stock
   
Anti-dilutive shares    
Anti-dilutive shares 122,167 191,166
Convertible preferred stock (as converted basis)
   
Anti-dilutive shares    
Anti-dilutive shares   1,448,333