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Inventory And Land Held For Sale (Major Components Of Inventory) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Inventory Disclosure [Abstract]    
Homes under construction $ 1,182,038 $ 1,210,717
Land under development 2,674,484 2,610,501
Land held for future development 727,894 815,250
House and land inventory $ 4,584,416 $ 4,636,468