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Accounts Receivable, Net (Tables)
 12 Months Ended
Sep. 30, 2017
Text Block [Abstract]  
Accounts Receivable, Net

Accounts receivable, net consists of the following:

 

     As of September 30,  
     2017      2016  

Accounts receivable — billed

    $ 664,099      $ 723,921  

Accounts receivable — unbilled

      229,695        134,122  

Less — allowances

      (28,726 )       (39,512 ) 
  

 

 

     

 

 

  

Accounts receivable, net

    $ 865,068      $ 818,531