Balance Sheet Details (Tables)

6 Months Ended

Mar. 31, 2021

Balance Sheet Details

Components of inventories

Inventories consist of the following (in thousands):

	March 31,		September 30,
	2021		2020
Finished products	$	17,941	$	14,838
Work in process and inventoried costs under long-term contracts		67,164		73,076
Materials and purchased parts		47,698		39,337
Net inventories	$	132,803	$	127,251

Components of property, plant and equipment

Significant components of property, plant and equipment are as follows (in thousands):

	March 31,		September 30,
	2021		2020
Land and land improvements	$	7,213	$	7,423
Buildings and improvements		50,858		49,716
Machinery and other equipment		153,418		132,962
Software		126,446		121,890
Leasehold improvements		23,260		22,295
Construction and internal-use software development in progress		16,146		21,409
Accumulated depreciation and amortization		(208,558)		(189,394)
	$	168,783	$	166,301