Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations, net of tax	$ (14)	$ (159)	$ (1,090)
Litigation settlement accrual			1,300
Litigation settlement expense		1,400
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Home construction and land sales expenses	(5)	119	1,245
Gross profit (loss)	5	(119)	(1,245)
General and administrative expenses	23	85	173
Operating loss	(18)	(204)	(1,418)
Other income, net	0	0	19
Loss from discontinued operations before income taxes	(18)	(204)	(1,399)
Benefit from income taxes	(4)	(45)	(309)
Loss from discontinued operations, net of tax	$ (14)	$ (159)	$ (1,090)