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Real Estate Inventories - Summary of Interest Incurred, Capitalized and Expensed (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Real Estate Inventory, Capitalized Interest Costs [Roll Forward]      
Interest incurred $ 41,706us-gaap_InterestCostsIncurred $ 22,674us-gaap_InterestCostsIncurred $ 27,038us-gaap_InterestCostsIncurred
Interest capitalized (38,975)us-gaap_InterestCostsCapitalizedAdjustment (19,081)us-gaap_InterestCostsCapitalizedAdjustment (22,059)us-gaap_InterestCostsCapitalizedAdjustment
Interest expensed 2,731us-gaap_InterestExpense 3,593us-gaap_InterestExpense 4,979us-gaap_InterestExpense
Capitalized interest in beginning inventory 138,233us-gaap_RealEstateInventoryCapitalizedInterestCosts 155,823us-gaap_RealEstateInventoryCapitalizedInterestCosts 164,056us-gaap_RealEstateInventoryCapitalizedInterestCosts
Interest capitalized as a cost of inventory 38,975us-gaap_RealEstateInventoryCapitalizedInterestCostsIncurred 19,081us-gaap_RealEstateInventoryCapitalizedInterestCostsIncurred 22,059us-gaap_RealEstateInventoryCapitalizedInterestCostsIncurred
Interest previously capitalized as a cost of inventory, included in cost of sales (52,747)us-gaap_RealEstateInventoryCapitalizedInterestCostsCostOfSales (36,671)us-gaap_RealEstateInventoryCapitalizedInterestCostsCostOfSales (30,292)us-gaap_RealEstateInventoryCapitalizedInterestCostsCostOfSales
Capitalized interest in ending inventory $ 124,461us-gaap_RealEstateInventoryCapitalizedInterestCosts $ 138,233us-gaap_RealEstateInventoryCapitalizedInterestCosts $ 155,823us-gaap_RealEstateInventoryCapitalizedInterestCosts