Inventory	12 Months Ended
Sep. 30, 2016
Inventory Impairments and Land Option Cost Write-Offs [Abstract]
Inventory	INVENTORY At the end of each quarter during fiscal 2016, the Company reviewed the performance and outlook for all of its land inventories and communities for indicators of potential impairment and performed detailed impairment evaluations and analyses when necessary. As of September 30, 2016, the Company performed detailed impairment evaluations of communities and land inventories with a combined carrying value of $160.9 million and recorded impairment charges of $11.4 million during the fourth quarter to reduce the carrying value of impaired communities and land to their estimated fair value. Total impairment charges during fiscal 2016, 2015 and 2014 were $20.3 million, $44.9 million and $75.2 million, respectively. Impairments in fiscal 2016 and 2015 primarily related to strategic decisions to sell inactive parcels of land, most of which were in the East and Southwest regions during fiscal 2016 and in the East, Southeast and West regions during fiscal 2015. Impairments in fiscal 2014 primarily related to underperforming projects in the Chicago market of the Midwest region and in the suburban Washington, D.C. market of the East region. During fiscal 2016, the Company wrote off $11.1 million of earnest money deposits and pre-acquisition costs related to land option contracts that the Company expects to terminate. Earnest money and pre-acquisition cost write-offs for fiscal 2015 and 2014 were $15.4 million and $10.0 million, respectively.

INVENTORY

At the end of each quarter during fiscal 2016, the Company reviewed the performance and outlook for all of its land inventories and communities for indicators of potential impairment and performed detailed impairment evaluations and analyses when necessary. As of September 30, 2016, the Company performed detailed impairment evaluations of communities and land inventories with a combined carrying value of $160.9 million and recorded impairment charges of $11.4 million during the fourth quarter to reduce the carrying value of impaired communities and land to their estimated fair value. Total impairment charges during fiscal 2016, 2015 and 2014 were $20.3 million, $44.9 million and $75.2 million, respectively. Impairments in fiscal 2016 and 2015 primarily related to strategic decisions to sell inactive parcels of land, most of which were in the East and Southwest regions during fiscal 2016 and in the East, Southeast and West regions during fiscal 2015. Impairments in fiscal 2014 primarily related to underperforming projects in the Chicago market of the Midwest region and in the suburban Washington, D.C. market of the East region.

During fiscal 2016, the Company wrote off $11.1 million of earnest money deposits and pre-acquisition costs related to land option contracts that the Company expects to terminate. Earnest money and pre-acquisition cost write-offs for fiscal 2015 and 2014 were $15.4 million and $10.0 million, respectively.