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Inventory (Summary of Interests in Land Option Agreements) (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Variable Interest Entity [Line Items]    
Deposits and Pre-acquisition Costs $ 449,458 $ 404,922
Remaining Purchase Price 6,015,795 5,457,878
Land options with VIEs    
Variable Interest Entity [Line Items]    
Deposits and Pre-acquisition Costs 194,845 179,604
Remaining Purchase Price 2,361,581 2,329,187
Other land options    
Variable Interest Entity [Line Items]    
Deposits and Pre-acquisition Costs 254,613 225,318
Remaining Purchase Price $ 3,654,214 $ 3,128,691