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Inventory (Major Components Of Inventory) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Homes under construction $ 3,276,279 $ 2,899,016
Land under development 4,132,273 4,347,107
Raw land 449,112 434,491
Total Inventory $ 7,857,664 $ 7,680,614