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Inventory And Land Held For Sale (Major Components Of Inventory) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Homes under construction $ 2,899,016 $ 2,630,158
Land under development 4,347,107 4,129,225
Raw land 434,491 493,970
House and land inventory $ 7,680,614 $ 7,253,353