Balance Sheet Details (Tables)

9 Months Ended

Jun. 30, 2017

Balance Sheet Details

Schedule of components of accounts receivable

The components of accounts receivable are as follows (in thousands):

	June 30,		September 30,
	2017		2016
Trade and other receivables	$	11,357	$	15,488
Long-term contracts:
Billed		163,174		146,619
Unbilled		209,014		241,726
Allowance for doubtful accounts		(401)		(326)
Total accounts receivable		383,144		403,507
Less estimated amounts not currently due		(21,301)		(20,926)
Current accounts receivable	$	361,843	$	382,581

Components of inventories

Inventories consist of the following (in thousands):

	June 30,		September 30,
	2017		2016
Finished products	$	7,223	$	10,018
Work in process and inventoried costs under long-term contracts		100,945		62,570
Materials and purchased parts		9,798		12,102
Customer advances		(14,528)		(18,328)
Net inventories	$	103,438	$	66,362