Leases - Cash Flow Information (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 5,050
Operating cash flows from finance leases	59
Financing cash flows from finance leases	425
Lease assets obtained in exchange for new lease liabilities:
Operating leases	2,893
Finance leases	$ 3,045