Leases - Operating Lease Expense (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2019 USD ($)
Lease, Cost [Abstract]
Operating lease costs	$ 2,122
Amortization of assets	311
Interest on lease liabilities	29
Total finance lease costs	340
Variable lease cost	406
Short-term lease costs	164
Total lease costs	$ 3,032