Leases (Lease-Related Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases	$ 2,776	$ 2,671
Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for finance leases	16	35
Cash paid for amounts included in the measurement of lease liabilities: Financing cash flows for finance leases	574	835
Right-of-use assets obtained in exchange for recorded lease obligations: Operating leases	7,999	5,070
Right-of-use assets obtained in exchange for recorded lease obligations: Finance leases	$ 1,260	$ 12