Discontinued Operations - Results of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations, net of tax	$ (40)	$ 78	$ (110)	$ (122)
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenue	0	0	0	0
Home construction and land sales expenses	6	(56)	84	252
Gross profit (loss)	(6)	56	(84)	(252)
General and administrative expenses	60	(55)	91	(53)
Operating income (loss)	(66)	111	(175)	(199)
Other expense, net	(3)	0	(3)	0
Income (loss) from discontinued operations before income taxes	(69)	111	(178)	(199)
Expense (benefit) from income taxes	(29)	33	(68)	(77)
Income (loss) from discontinued operations, net of tax	$ (40)	$ 78	$ (110)	$ (122)