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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

 

$

53,450

 

$

34,785

 

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

 

 

36,341

 

 

33,729

 

 

 

 

89,791

 

 

68,514

 

Commercial Customers:

 

 

 

 

 

 

 

Amounts billed

 

 

131,532

 

 

95,173

 

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

 

 

150,610

 

 

160,008

 

 

 

 

282,142

 

 

255,181

 

 

 

 

371,933

 

 

323,695

 

Less unbilled amounts not currently due--commercial customers

 

 

(17,457)

 

 

(20,926)

 

 

 

$

354,476

 

$

302,769