Benefit Plans - Schedule of Components of Pension Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Retirement Benefits [Abstract]
Service cost	$ 26	$ 26	$ 52	$ 52
Interest cost	92	93	184	186
Expected return on plan assets	(76)	(84)	(152)	(168)
Net periodic pension cost	$ 42	$ 35	$ 84	$ 70