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Inventory And Land Held for Sale (Narrative) (Details) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Sep. 30, 2010
Jun. 30, 2010
Mar. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Inventory Disclosure [Abstract]                      
Capitalized interest related to inventory impairments expensed to cost of revenues                 $ 5,400,000 $ 27,600,000 $ 68,200,000
Homebuilding interest directly expensed due to active inventory exceeding debt levels                   1,500,000  
Number of Communities Assessed for Impairment                 100    
Discount Rate for Fair Value Determination Minimum                 12.00%    
Discount Rate for Fair Value Determination Maximum                 17.00%    
Discount Rate For Fair Value Determination Aggregate Average                 13.00%    
Write-off of deposits and pre-acquisition costs 3,400,000 2,300,000 3,700,000 600,000 1,600,000 1,100,000 2,300,000 500,000 10,002,000 5,594,000 54,256,000
Net realizable value adjustments - land held for sale $ 9,900,000 $ 100,000 $ (200,000) $ 0 $ 38,100,000 $ 600,000 $ (200,000) $ 600,000 $ 9,844,000 $ 39,128,000 $ 113,737,000