Accrued Liabilities (Tables)

12 Months Ended

Sep. 30, 2023

Accrued Liabilities [Line Items]

Accrued Liabilities

	September 30, 2023		September 30, 2022
Salaries and other member benefits	$	146,713	$	75,665
Product warranties and related liabilities (1)		18,162		40,042
Interest payable		13,611		13,481
Accrued retirement benefits		2,822		2,779
Net current contract liabilities (Note 3)		33,748		30,663
Current portion of accrued restructuring charges		—		1,083
Taxes, other than income		13,436		21,159
Other		34,124		21,411
	$	262,616	$	206,283

(1)In fiscal year 2022, product warranties and related liabilities include estimates related to product liabilities expected to be fully recoverable from insurance.

Changes in Accrued Product Warranties and Related Liabilities

Changes in accrued product warranties and related liabilities were as follows:

	Year Ended September 30,
	2023			2022			2021
Beginning of period	$	40,042		$	17,481		$	18,972
Additions, net of recoveries		25,984			29,827			1,164
Reductions for settlement		(47,949	)		(6,937	)		(2,718	)
Foreign currency exchange rate changes		85			(329	)		63
End of period	$	18,162		$	40,042		$	17,481

Employee Severance [Member]

Accrued Liabilities [Line Items]

Loss Reserve & Restructuring Reserve Activity

The summary of activity in accrued restructuring charges is as follows:

			Period Activity
	September 30, 2022		Charges		Payments			Non-cash activity		September 30, 2023
Workforce management costs associated with:
Cost reduction plan	$	—	$	5,172	$	(5,207	)	$	35	$	—
Aerospace		139		—		(139	)		—		—
Industrial		944		—		(944	)		—		—
Total	$	1,083	$	5,172	$	(6,290	)	$	35	$	—

			Period Activity
	September 30, 2021		Charges		Payments			Non-cash activity			September 30, 2022
Workforce management costs associated with:
Hydraulics Systems Realignment	$	3,758	$	—	$	(505	)	$	(3,253	)	$	—
Engine Systems Realignment		1,250		—		—			(1,250	)		—
Aerospace		—		139		—			—			139
Industrial		—		944		—			—			944
Total	$	5,008	$	1,083	$	(505	)	$	(4,503	)	$	1,083