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Acquisition - Subsequent Event (Notes)	6 Months Ended
Acquisition - Subsequent Event (Notes)	Apr. 30, 2019
Business Combinations [Abstract]
Acquisition	Acquisition – Subsequent Event In May 2019, we acquired substantially all of the assets and operations of Sharp Residential, LLC (“Sharp”), a builder in metropolitan Atlanta, Georgia, for approximately $93.2 million in cash. The assets acquired were primarily inventory, including approximately 950 home sites owned or controlled through land purchase agreements. In connection with this acquisition, we assumed contracts to deliver 125 homes with an aggregate value of $66.1 million. The average price of undelivered homes at the date of acquisition was approximately $528,900. As a result of this acquisition, our selling community count increased by 10 communities at the acquisition date.