Detail of Selected Balance Sheet Accounts (Tables)

6 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Components of Inventories

The components of inventories are summarized below (in thousands):

	March 31, 2024		September 30, 2023
Raw materials, parts and sub-assemblies	$	87,564	$	68,631
Work-in-progress	1,204		1,379
Provision for excess and obsolete inventories	(6,693)		(6,145)
Total inventories	$	82,075	$	63,865

Property, Plant and Equipment

Property, plant and equipment are summarized below (in thousands):

	March 31, 2024		September 30, 2023
Land	$	21,606	$	21,526
Buildings and improvements	124,070		121,454
Machinery and equipment	94,683		92,477
Furniture and fixtures	3,803		3,726
Construction in process	1,403		4,129
	$	245,565	$	243,312
Less: Accumulated depreciation	(148,910)		(145,687)
Total property, plant and equipment, net	$	96,655	$	97,625

Activity in Product Warranty Accrual

Activity in our product warranty accrual consisted of the following (in thousands):

	Three months ended March 31,				Six months ended March 31,
	2024		2023		2024		2023
Balance at beginning of period	$	3,680	$	2,380	$	3,305	$	2,345
Increase to warranty expense	1,867		1,211		2,994		1,690
Deduction for warranty charges	(968)		(882)		(1,742)		(1,335)
Change due to foreign currency translation	(11)		2		11		11
Balance at end of period	$	4,568	$	2,711	$	4,568	$	2,711