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FAIR VALUE MEASUREMENTS (Tables)
 6 Months Ended
Jun. 30, 2012
Fair Value Disclosures [Abstract]  
Fair Value Hierarchy for Financial Assets Measured at Fair Value on a Recurring Basis


   
Level 1
    
Level 2
    
Level 3
    
Total
  
June 30, 2012:
                        
Available for sale securities:
                        
Money market funds(1)
  
$
4,237
    
$
—
    
$
—
    
$
4,237
  
   
$
4,237
    
$
—
    
$
—
    
$
4,237
  
 
   
Level 1
    
Level 2
    
Level 3
    
Total
  
December 31, 2011:
                        
Available for sale securities:
                        
Money market funds(1)
  
$
9,237
    
$
—
    
$
—
    
$
9,237
  
   
$
9,237
    
$
—
    
$
—
    
$
9,237