Debt - Financing Obligation (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2017 USD ($) lease_renewal_option
Debt Instrument [Line Items]
Lessee, Finance Lease, Term of Contract	15 years
Lessee Leasing Arrangements Capital Leases Number Options To Renew | lease_renewal_option	4
Lessee, Finance Lease, Renewal Term	5 years
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Base Annual Rent Under Facility Lease	$ 1,638
Annual Rent Escalation	3.00%
Financing Obligation	$ 20,944
Effective Interest Rate	7.89%
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year	$ 831
Capital Leases, Future Minimum Payments Due in Two Years	1,699
Capital Leases, Future Minimum Payments Due in Three Years	1,750
Capital Leases, Future Minimum Payments Due in Four Years	1,803
Capital Leases, Future Minimum Payments Due in Five Years	1,857
Capital Leases, Future Minimum Payments Due Thereafter	21,288
Capital Leases, Future Minimum Payments Due	$ 29,228