Summary of Operations and Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2019

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,
	2019			2018			2017
Beginning balance	$	644		$	710		$	417
Additions for warranties issued during the period		785			966			965
Reductions in the liability for payments made under    the warranty		(693	)		(782	)		(429	)
Changes related to pre-existing warranties		(179	)		(250	)		(244	)
Currency translation adjustment		(1	)		—			1
Ending balance	$	556		$	644		$	710

Summary of Research, Development and Engineering Expense

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

	Years Ended September 30,
	2019			2018			2017
Research, development and engineering	$	3,112		$	2,868		$	3,037
Grants earned		(44	)		(12	)		(299	)
Net research, development and engineering	$	3,068		$	2,856		$	2,738

Summary of Effect of Adoption of New Accounting Pronouncement

The following table summarizes the effects related to the adoption of ASU 2016-18 for the years ended September 30, 2018 and 2017:

	September 30, 2018						September 30, 2017
	As reported			As adjusted			As reported		As adjusted
Net cash provided by (used in) operating activities	$	6,790		$	(13,768	)	$	11,789	$	34,051
Effect of Exchange Rate Changes on Cash, Cash    Equivalents and Restricted Cash	$	(1,455	)	$	(1,372	)	$	192	$	1,677
Net Increase (Decrease) in Cash, Cash Equivalents    and Restricted Cash	$	7,210		$	(13,265	)	$	23,466	$	47,213
Cash, Cash Equivalents and Restricted Cash,    Beginning of Period	$	51,121		$	75,761		$	27,655	$	28,548
Cash, Cash Equivalents and Restricted Cash, End of    Period	$	58,331		$	62,496		$	51,121	$	75,761