Accrued Liabilities (Changes in Restructuring Reserve Activity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Restructuring Cost and Reserve [Line Items]
Charges	$ (3,420)	$ 5,008	$ 22,216
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, beginning of period	5,008	3,395
Charges	1,083	5,008
Payments	(505)	(2,409)
Foreign currency exchange rate changes		180
Non-cash activity	(4,503)	(1,166)
Restructuring charges, end of period	1,083	5,008	3,395
Employee Severance [Member] | Covid-19 Pandemic [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, beginning of period		3,395
Payments		(2,409)
Foreign currency exchange rate changes		180
Non-cash activity		(1,166)
Restructuring charges, end of period			$ 3,395
Employee Severance [Member] | Hydraulics Systems Realignment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, beginning of period	3,758
Charges		3,758
Payments	(505)
Non-cash activity	(3,253)
Restructuring charges, end of period		3,758
Employee Severance [Member] | Engine Systems Realignment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, beginning of period	1,250
Charges		1,250
Non-cash activity	(1,250)
Restructuring charges, end of period		$ 1,250
Employee Severance [Member] | Aerospace [Member]
Restructuring Cost and Reserve [Line Items]
Charges	139
Restructuring charges, end of period	139
Employee Severance [Member] | Industrial [Member]
Restructuring Cost and Reserve [Line Items]
Charges	944
Restructuring charges, end of period	$ 944