Inventory - Schedule of Discounted Cash Flow Analysis (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2016 USD ($) lot Community	Jun. 30, 2016 USD ($) lot Community
Real Estate, Write-down or Reserve [Line Items]
Number of Communities Impaired | Community	2	3
Discounted Cash Flow Analyses, Number of Lots Impaired | lot	257	291
Inventory Impairment, Results of Discounted Cash Flow Analysis	$ 11,899	$ 13,724
Estimated Fair Value of Impaired Inventory	$ 28,900	$ 34,418
Continuing Operations | Corporate and unallocated
Real Estate, Write-down or Reserve [Line Items]
Number of Communities Impaired | Community	0	0
Discounted Cash Flow Analyses, Number of Lots Impaired | lot	0	0
Inventory Impairment, Results of Discounted Cash Flow Analysis	$ 789	$ 1,101
Estimated Fair Value of Impaired Inventory	$ 0	$ 0
Continuing Operations | West Segment | Operating Segments
Real Estate, Write-down or Reserve [Line Items]
Number of Communities Impaired | Community	1	2
Discounted Cash Flow Analyses, Number of Lots Impaired | lot	179	213
Inventory Impairment, Results of Discounted Cash Flow Analysis	$ 5,216	$ 6,729
Estimated Fair Value of Impaired Inventory	$ 10,827	$ 16,345
Continuing Operations | East Segment | Operating Segments
Real Estate, Write-down or Reserve [Line Items]
Number of Communities Impaired | Community	1	1
Discounted Cash Flow Analyses, Number of Lots Impaired | lot	78	78
Inventory Impairment, Results of Discounted Cash Flow Analysis	$ 5,894	$ 5,894
Estimated Fair Value of Impaired Inventory	$ 18,073	$ 18,073