Accrued Liabilities (Changes in Restructuring Reserve Activity) (Details) - Employee Severance [Member] - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring charges, beginning of period	$ 5,008	$ 3,395
Payments	(505)	(2,287)
Foreign currency exchange rate changes		21
Non-cash activity		(726)
Restructuring charges, end of period	4,503	403
Covid-19 Pandemic [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, beginning of period		3,395
Payments		(2,287)
Foreign currency exchange rate changes		21
Non-cash activity		(726)
Restructuring charges, end of period		$ 403
Hydraulics Systems Realignment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, beginning of period	3,758
Payments	(505)
Restructuring charges, end of period	3,253
Engine Systems Realignment [member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, beginning of period	1,250
Restructuring charges, end of period	$ 1,250