Accounts Receivable
 3 Months Ended
Mar. 31, 2015
Receivables [Abstract]  
Accounts Receivable
4. Accounts Receivable:

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

 

     March 31, 2015      December 31, 2014  

Gross accounts receivable

    $ 1,251,666       $ 1,200,958   

Allowance for contractual adjustments and uncollectibles

      (890,792 )       (848,767 ) 
  

 

 

     

 

 

  
$ 360,874    $ 352,191