Leases - Supplemental Cash Flow Information and Non-Cash Activity Schedule (Details) $ in Thousands	9 Months Ended
	Jun. 30, 2020 USD ($)
Cash paid for amounts included in measurement of liabilities:
Operating cash flows from operating leases	$ 1,628
Operating cash flows from finance leases	4
Financing cash flows from finance leases	42
Right-of-use asset obtained in exchange for new lease liabilities, operating leases	$ 278