Inventory	12 Months Ended
Sep. 30, 2017
Inventory Impairments and Land Option Cost Write-Offs [Abstract]
Inventory	INVENTORY At the end of each quarter during fiscal 2017, the Company reviewed the performance and outlook for all of its communities and land inventories for indicators of potential impairment and performed detailed impairment evaluations and analyses when necessary. As of September 30, 2017, the Company performed detailed impairment evaluations of communities and land inventories with a combined carrying value of $105.3 million and recorded impairment charges of $12.8 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 2017, 2016 and 2015 were $23.2 million, $20.3 million and $44.9 million, respectively. During fiscal 2017, the Company wrote off $17.0 million of earnest money deposits and pre-acquisition costs related to land option contracts that the Company has terminated or expects to terminate. Earnest money and pre-acquisition cost write-offs for fiscal 2016 and 2015 were $11.1 million and $15.4 million, respectively.

Inventory

12 Months Ended

Sep. 30, 2017

Inventory Impairments and Land Option Cost Write-Offs [Abstract]

INVENTORY

At the end of each quarter during fiscal 2017, the Company reviewed the performance and outlook for all of its communities and land inventories for indicators of potential impairment and performed detailed impairment evaluations and analyses when necessary. As of September 30, 2017, the Company performed detailed impairment evaluations of communities and land inventories with a combined carrying value of $105.3 million and recorded impairment charges of $12.8 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 2017, 2016 and 2015 were $23.2 million, $20.3 million and $44.9 million, respectively.

During fiscal 2017, the Company wrote off $17.0 million of earnest money deposits and pre-acquisition costs related to land option contracts that the Company has terminated or expects to terminate. Earnest money and pre-acquisition cost write-offs for fiscal 2016 and 2015 were $11.1 million and $15.4 million, respectively.