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Inventory (Major Components Of Inventory) (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Homes under construction $ 3,065,801 $ 2,899,016
Land under development 4,139,123 4,347,107
Raw land 410,547 434,491
Total Inventory $ 7,615,471 $ 7,680,614