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Fair Value (Tables)
9 Months Ended
Sep. 30, 2012
Fair Value [Abstract]  
Schedule Of Long-Term Investments Measured At Fair Value
(in thousands)   2012     2011  
             
Balance as of January 1   $ 24,673     $ 35,297  
Net unrealized gains included in other comprehensive loss     351       598  
Sales of investments at par value     (11,025 )     (11,100 )
                 
Balance as of September 30   $ 13,999     $ 24,795  
                 
Unrealized losses still held as of September 30   $ 2,976     $ 3,255