Investments in Unconsolidated Entities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2020
Equity Method Investments and Joint Ventures [Abstract]
Impairment of unconsolidated entity investments	$ 0	$ 0
Schedule of Equity Method Investments [Line Items]
Equity in loss of unconsolidated entities	(75)	(13)
Equity in income of unconsolidated entities	0	$ 0
Financial Guarantee
Schedule of Equity Method Investments [Line Items]
Outstanding guarantees	$ 0		$ 0