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Accounts Receivable
9 Months Ended
Sep. 30, 2016
Receivables [Abstract]  
Accounts Receivable
4. Accounts Receivable:

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

 

     September 30,
2016
     December 31,
2015
 

Gross accounts receivable

   $ 1,659,304       $ 1,574,038   

Allowance for contractual adjustments and uncollectibles

     (1,172,347      (1,129,301
  

 

 

    

 

 

 
   $ 486,957       $ 444,737