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Inventory and Land Held for Sale (Major Components of Inventory) (Details) (USD $)
In Thousands
Jun. 30, 2011
Dec. 31, 2010
Inventory and Land Held for Sale    
Homes under construction $ 1,431,750 $ 1,331,618
Land under development 2,601,005 2,541,829
Land held for future development 872,368 908,366
Inventory, operative builders, total $ 4,905,123 $ 4,781,813