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Owned Inventory - Summary of Interests in Lot Option Agreements (Details) - Unconsolidated Entities - USD ($)
$ in Thousands
Mar. 31, 2024
Sep. 30, 2023
Real Estate Properties [Line Items]    
Deposits and non-refundable pre-acquisition costs incurred $ 174,602 $ 165,371
Remaining purchase price if lot option agreements are exercised $ 989,420 $ 949,447