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Accounts Receivable (Tables)
 12 Months Ended
Sep. 30, 2017
Accounts Receivable  
Schedule of components of accounts receivable

The components of accounts receivable under long-term contracts are as follows (in thousands):

 

 

 

 

 

 

 

 

 

September 30,

    

2017

    

2016

 

 

 

 

 

 

 

 

 

U.S. Government Contracts:

 

 

 

 

 

 

 

Amounts billed

 

$

76,451

 

$

66,668

 

Recoverable costs and accrued profits on progress completed--not billed

 

 

88,105

 

 

81,624

 

 

 

 

164,556

 

 

148,292

 

Commercial Customers:

 

 

 

 

 

 

 

Amounts billed

 

 

119,041

 

 

79,955

 

Recoverable costs and accrued profits on progress completed--not billed

 

 

150,668

 

 

160,098

 

 

 

 

269,709

 

 

240,053

 

 

 

 

434,265

 

 

388,345

 

Less unbilled amounts not currently due--commercial customers

 

 

(17,457)

 

 

(20,926)

 

 

 

$

416,808

 

$

367,419