Related Person Transactions - Other (Details)	12 Months Ended
Sep. 30, 2020
Percentage of Executives' Business Time Devoted to Services to Managed Operators
Related Party Transaction [Line Items]
Related party transaction percentage	80.00%
Percentage of Executives' Cash Compensation Paid by Managed Operators
Related Party Transaction [Line Items]
Related party transaction percentage	80.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration