Inventory - Summary of Interests in Lot Option Agreements (Details) - Unconsolidated lot option agreements - USD ($) $ in Thousands	Mar. 31, 2016	Sep. 30, 2015
Real Estate Properties [Line Items]
Deposits and non-refundable preacquisition costs incurred	$ 72,032	$ 51,475
Remaining obligations	$ 430,057	$ 420,070

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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