Leases (Leases, Lessee Disclosures) (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)
Leases [Abstract]
Sale and Leaseback Transaction, Gain (Loss), Net		$ 0
Amortization of ROU assets	$ 3,359	10,190
Interest on lease liabilities	490	1,501
Operating lease cost	3,944	12,075
Short-term lease cost	2,774	4,690
Variable lease cost	0	0
Sublease income	(14)	(42)
Total lease cost	$ 10,553	28,414
Operating cash flows from finance leases		1,504
Operating cash flows from operating leases		12,003
Financing cash flows from finance leases		9,991
ROU assets obtained in exchange for new finance lease liabilities		8,411
ROU assets obtained in exchange for new operating lease liabilities		5,668
ROU asset remeasurement		$ 125
Weighted average remaining lease term - finance leases	3 years 10 months 24 days	3 years 10 months 24 days
Weighted average remaining lease term - operating leases	5 years	5 years
Weighted average discount rate - finance leases	4.70%	4.70%
Weighted average discount rate - operating leases	4.50%	4.50%