Leases Narrative (Details) $ in Thousands	12 Months Ended
Sep. 30, 2020 USD ($) ft²
Leases [Abstract]
Lease agreement term, lease not yet commenced	10 years
Operating lease payment due, lease not yet commenced	$ 4,800
Tenant improvement allowance, lease not yet commenced	$ 1,000
Area of lease not yet commenced \| ft²	35,466

Term of lessee's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980

Name:	us-gaap_LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant