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Fair Value (Tables)
6 Months Ended
Jun. 30, 2013
Fair Value [Abstract]  
Schedule Of Long-Term Investments Measured At Fair Value
(in thousands) 2013  2012
Balance as of January 1$ 10,324 $ 24,673
Net unrealized gains included in other comprehensive loss  276   81
Sales of investments at par value  (25)   (9,025)
Balance as of June 30$ 10,575 $ 15,729
      
Unrealized losses still held as of June 30$ 1,575 $ 3,246