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LOSS PER SHARE (Tables)
 6 Months Ended
Jun. 30, 2012
Earnings Per Share [Abstract]  
Basic and Diluted Net Income or Loss Per Share Calculation


 
                
 
Three Months Ended
June 30,
  
Six Months Ended
June 30,
  
 
2012
  
2011
  
2012
    
2011
  
                           
Net loss available to common stockholders
$
(1,997
)
$
(2,612
)
$
(1,890
)
  
$
(4,112
)
Weighted average shares outstanding, basic and diluted
  
50,453
    
50,174
    
50,497
      
50,251
  
Net loss per share, basic and diluted
$
(0.04
)
$
(0.05
)
$
(0.04
)
  
$
(0.08
)
Anti-dilutive securities excluded from diluted net loss per share calculation for stock-based compensation plans
  
6,337
    
6,447
    
6,337
      
6,447