Balance Sheet Details (Tables)

3 Months Ended

Dec. 31, 2017

Balance Sheet Details

Schedule of components of accounts receivable

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

	December 31,		September 30,
	2017		2017
Trade and other receivables	$	12,182	$	12,378
Long-term contracts:
Billed		172,661		195,492
Unbilled		235,583		238,773
Allowance for doubtful accounts		(429)		(436)
Total accounts receivable		419,997		446,207
Less estimated amounts not currently due		(17,328)		(17,457)
Current accounts receivable	$	402,669	$	428,750

Components of inventories

Inventories consist of the following (in thousands):

	December 31,		September 30,
	2017		2017
Finished products	$	2,942	$	4,369
Work in process and inventoried costs under long-term contracts		101,134		84,131
Materials and purchased parts		9,322		10,163
Customer advances		(12,003)		(10,948)
Net inventories	$	101,395	$	87,715