Benefit Plans - Schedule of Components of Pension Expense (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2023	Jun. 30, 2023
Retirement Benefits [Abstract]
Service cost	$ 26	$ 78
Interest cost	93	279
Expected return on plan assets	(84)	(252)
Net periodic pension cost	$ 35	$ 105