Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Inventory Write-down	$ 6,331	$ 168	$ 0	$ 0	$ 1,693	$ 470	$ 282	$ 0	$ 6,499	$ 2,445	$ 15,282
Sales Commissions and Fees									81,002	74,811	70,460
Depreciation									13,807	14,009	13,794
Loss from discontinued operations, net of tax									(329)	(140)	(512)
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenue									633	0	0
Home construction and land sales expenses									612	72	668
Inventory Write-down									450	0	0
Gross loss									(429)	(72)	(668)
General and administrative expenses									101	169	137
Operating loss									(530)	(241)	(805)
Equity in income of unconsolidated entities									93	31	12
Other (expense) income, net									(4)	(5)	6
Loss from discontinued operations before income taxes									(441)	(215)	(787)
Benefit from income taxes									(112)	(75)	(275)
Loss from discontinued operations, net of tax									$ (329)	$ (140)	$ (512)