Formation and Description of Business (Details) $ in Thousands		3 Months Ended			9 Months Ended
	Dec. 31, 2020 ConstructionSite	Mar. 31, 2021 USD ($) Class Home	Sep. 30, 2020 ConstructionSite	Mar. 31, 2020 USD ($)	Mar. 31, 2021 USD ($) Class Home Segment	Mar. 31, 2020 USD ($)	Feb. 15, 2019 USD ($) Subsidiary
Description of Business [Abstract]
Cash received for funding initial expenses of operation | $							$ 5,000
Number of wind-down subsidiaries | Subsidiary							43
Number of classes of liquidation trust interests | Class		2			2
Settlement of causes of action | $		$ 1,278		$ 1,179	$ 8,443	$ 4,845
Number of single-family homes owned by wind-down subsidiaries		8			8
Number of single-family homes listed for sale		1			1
Number of reportable segments | Segment					1
COVID-19 [Member]
Description of Business [Abstract]
Number of construction sites closed | ConstructionSite	1		3
Other Locations [Member]
Description of Business [Abstract]
Number of single-family homes owned by wind-down subsidiaries		1			1