Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Unrecognized tax benefits that would impact effective tax rate	$ 2,700
Income tax benefit specific to the period	(2,700)	$ 1,000
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning balance	2,908
Decreases related to expiration of statute of limitations	(69)
Decreases related to prior year income tax positions	10
Unrecognized tax benefits, ending balance	2,829
Maximum
Unrecognized tax benefits that would decrease next twelve months	$ 700