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Segment Information (Land-Related Charges By Segment) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Segment Reporting Information    
Land and community valuation adjustments $ 4,514 $ 103
Net realizable value adjustments - land held for sale 643 0
Write-off of deposits and pre-acquisition costs 739 623
Total land-related charges 5,896 726
Northeast [Member]
    
Segment Reporting Information    
Land and community valuation adjustments 0 0
Net realizable value adjustments - land held for sale 0 0
Write-off of deposits and pre-acquisition costs 51 263
Southeast [Member]
    
Segment Reporting Information    
Land and community valuation adjustments 0 41
Net realizable value adjustments - land held for sale 285 0
Write-off of deposits and pre-acquisition costs 555 205
Florida [Member]
    
Segment Reporting Information    
Land and community valuation adjustments 0 0
Net realizable value adjustments - land held for sale 38 0
Write-off of deposits and pre-acquisition costs 11 0
Texas [Member]
    
Segment Reporting Information    
Land and community valuation adjustments 0 0
Net realizable value adjustments - land held for sale 0 0
Write-off of deposits and pre-acquisition costs 25 13
North [Member]
    
Segment Reporting Information    
Land and community valuation adjustments 1,890 0
Net realizable value adjustments - land held for sale (119) 0
Write-off of deposits and pre-acquisition costs 97 62
Southwest [Member]
    
Segment Reporting Information    
Land and community valuation adjustments 1,810 0
Net realizable value adjustments - land held for sale 439 0
Write-off of deposits and pre-acquisition costs 0 80
Other Homebuilding [Member]
    
Segment Reporting Information    
Land and community valuation adjustments $ 814 [1] $ 62 [1]
[1] Primarily write-offs of capitalized interest related to land and community valuation adjustments.