Leases (Lease-Related Expenses) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating lease expense		$ 1,729	$ 1,511	$ 4,897	$ 4,562
Amortization of finance lease assets		102	110	322	358
Interest on finance lease liabilities		13	25	48	65
Variable lease expense		282	192	1,100	787
Short-term lease expense		75	63	233	400
Sublease income	[1]	(104)	(236)	(486)	(561)
Total lease expense		$ 2,097	$ 1,665	$ 6,114	$ 5,611

[1] Relates to two separate subleases Woodward has entered into for a leased manufacturing building in Niles, Illinois.