Discontinued Operations - Results of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations, net of tax	$ (82)	$ (23)	$ (141)	$ (64)
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenue	0	0	0	55
Home construction and land sales expenses	62	6	47	45
Gross (loss) profit	(62)	(6)	(47)	10
General and administrative expenses	43	23	133	90
Operating loss	(105)	(29)	(180)	(80)
Equity in loss of unconsolidated entities	0	0	0	(1)
Other expense, net	0	(1)	(1)	(2)
Loss from discontinued operations before income taxes	(105)	(30)	(181)	(83)
Benefit from income taxes	(23)	(7)	(40)	(19)
Loss from discontinued operations, net of tax	$ (82)	$ (23)	$ (141)	$ (64)