Accrued Liabilities (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5,172	$ (3,420)	$ 5,008
Restructuring, Incurred Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Restructuring charges	Restructuring charges
Hydraulics Systems and Engine Systems [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5,172	$ 1,083	$ 5,008
Restructuring Reserve, Accrual Adjustment	$ 4,503