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Variable Interest Entities - Summary of Interests in Land Option Agreements (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Variable Interest Entities Not Consolidated [Line Items]    
Deposits $ 58,796 $ 45,767
Remaining Purchase Price 367,088 431,135
Consolidated Inventory Held by VIEs 31,199 39,680
Consolidated VIEs [Member]
   
Variable Interest Entities Not Consolidated [Line Items]    
Deposits 8,265 6,979
Remaining Purchase Price 37,894 34,724
Consolidated Inventory Held by VIEs 31,199 39,680
Unconsolidated VIEs [Member]
   
Variable Interest Entities Not Consolidated [Line Items]    
Deposits 17,890 7,102
Remaining Purchase Price 122,901 75,171
Other land option agreements [Member]
   
Variable Interest Entities Not Consolidated [Line Items]    
Deposits 32,641 31,686
Remaining Purchase Price $ 206,293 $ 321,240