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Other Non-Current Liabilities
 12 Months Ended
Dec. 31, 2012
Other Liabilities, Noncurrent [Abstract]  
Other Non-Current Liabilities

9.       OTHER NON-CURRENT LIABILITIES

Other non-current liabilities consist of the following as of December 31, (in thousands):

 

       
  2012 2011 (1)
Deferred rent liability$ 254,494 $ 226,383
Unearned revenue  164,032   125,472
Other miscellaneous liabilities  225,175   220,229
       
Balance as of December 31,$ 643,701 $ 572,084
       
       
(1) December 31, 2011 balances have been revised to reflect purchase accounting measurement period adjustments.