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Fixed Assets
6 Months Ended
Jun. 30, 2013
Fixed Assets [Abstract]  
Fixed Assets

6. Fixed Assets

Fixed assets consisted of the following at (in thousands):

  June 30, December 31,
  2013 2012 2012
 
Fixed assets, at cost $ 226,473 $ 198,566 $ 211,089
Less accumulated depreciation and amortization   109,054   99,224   103,153
Fixed assets, net $ 117,419 $ 99,342 $ 107,936