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FAIR VALUE MEASUREMENTS (Tables)
9 Months Ended
Sep. 30, 2011
Fair Value Hierarchy for Financial Assets Measured at Fair Value on a Recurring Basis
The following table represents the fair value hierarchy for our financial assets (cash equivalents and investments in marketable securities) measured at fair value on a recurring basis (in thousands):

   
Level 1
    
Level 2
    
Level 3
    
Total
  
                         
September 30, 2011:
                        
Available for sale securities:
                        
Money market funds(1)
  
$
23,281
    
$
—
    
$
—
    
$
23,281
  
   
$
23,281
    
$
—
    
$
—
    
$
23,281
  
 
   
Level 1
    
Level 2
    
Level 3
    
Total
  
                         
December 31, 2010:
                        
Available for sale securities:
                        
Money market funds(1)
  
$
39,283
    
$
—
    
$
—
    
$
39,283
  
   
$
39,283
    
$
—
    
$
—
    
$
39,283
  
     
(1) Included in “Cash and cash equivalents” in the consolidated balance sheets as of September 30, 2011 and December 31, 2010 in addition to $11.0 million and $20.3 million, respectively, of cash. Unrealized gains and losses on money market funds were nominal due to the short-term nature of the investments.