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Allowance for Doubtful Accounts (Tables)
 6 Months Ended
Jun. 30, 2015
Receivables [Abstract]  
Schedule of Allowance for Doubtful Accounts
   Balance at
Beginning of
Period		      Charged to
Expense		      Deductions(1)      Balance at
End of
Period		  

Six months ended June 30, 2015

    $ 6,472         7,412         (7,953 )     $ 5,931   

Six months ended June 30, 2014

    $ 9,678         7,061         (8,970 )     $ 7,769   

 

(1) Deductions represent accounts written off, net of recoveries.