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Inventory (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Inventory Disclosure [Abstract]    
Completed home inventory and residential lots held for sale $ 96,694 $ 127,679
Work in process 372,916 269,255
Undeveloped land 1,737 4,070
Land not owned under option agreements 7,022 9,293
Inventory $ 478,369 $ 410,297