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FAIR VALUE MEASUREMENTS (Details) (Recurring basis, USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Level 1
   
Available for sale securities:    
Money market funds(1) $ 4,237 [1] $ 9,237 [1]
Assets, Fair Value Disclosure 4,237 9,237
Level 2
   
Available for sale securities:    
Money market funds(1)    [1]    [1]
Assets, Fair Value Disclosure      
Level 3
   
Available for sale securities:    
Money market funds(1)    [1]    [1]
Assets, Fair Value Disclosure      
Total
   
Available for sale securities:    
Money market funds(1) 4,237 [1] 9,237 [1]
Assets, Fair Value Disclosure $ 4,237 $ 9,237
[1] Included in "Cash and cash equivalents" in the consolidated balance sheets as of June 30, 2012 and December 31, 2011 in addition to $23.4 million and $20.6 million, respectively, of cash. Unrealized gains and losses on money market funds were nominal due to the short-term nature of the investments.