Summary of Operations and Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Product Warranty Liability

The following is a summary of activity in accrued warranty expense at our continuing operations, in thousands:

	Years Ended September 30,
	2022			2021			2020
Beginning balance	$	545		$	380		$	556
Additions for warranties issued during the period		821			250			393
Reductions in the liability for payments made under    the warranty		(36	)		(9	)		(433	)
Changes related to pre-existing warranties		(459	)		(76	)		(121	)
Currency translation adjustment		—			—			(15	)
Ending balance	$	871		$	545		$	380

Summary of Research, Development and Engineering Expense

The following is a summary of our research, development and engineering expense, thousands:

	Years Ended September 30,
	2022		2021		2020
Research, development and engineering	$	6,390	$	5,979	$	3,689
Grants earned		—		—		(377	)
Net research, development and engineering	$	6,390	$	5,979	$	3,312