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Accounts Receivable (Tables)
6 Months Ended
Jun. 30, 2017
Receivables [Abstract]  
Schedule of Accounts Receivable, Net

Accounts receivable, net consists of the following (in thousands):

 

     June 30, 2017      December 31, 2016  

Gross accounts receivable

   $ 1,688,731      $ 1,719,642  

Allowance for contractual adjustments and uncollectibles

     (1,208,329      (1,224,366
  

 

 

    

 

 

 
   $ 480,402      $ 495,276