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Segment Information (Land-Related Charges By Segment) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Segment Reporting Information    
Land and community valuation adjustments $ 283 $ 4,514
Net realizable value adjustments - land held for sale 80 643
Write-off of deposits and pre-acquisition costs 341 739
Total land-related charges 704 5,896
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 102 51
Southeast [Member]
    
Segment Reporting Information    
Land and community valuation adjustments 0 0
Net realizable value adjustments - land held for sale 0 285
Write-off of deposits and pre-acquisition costs 25 555
Florida [Member]
    
Segment Reporting Information    
Land and community valuation adjustments 0 0
Net realizable value adjustments - land held for sale 51 38
Write-off of deposits and pre-acquisition costs 32 11
Texas [Member]
    
Segment Reporting Information    
Land and community valuation adjustments 0 0
Net realizable value adjustments - land held for sale 4 0
Write-off of deposits and pre-acquisition costs 0 25
North [Member]
    
Segment Reporting Information    
Land and community valuation adjustments 0 1,890
Net realizable value adjustments - land held for sale 25 (119)
Write-off of deposits and pre-acquisition costs 107 97
Southwest [Member]
    
Segment Reporting Information    
Land and community valuation adjustments 0 1,810
Net realizable value adjustments - land held for sale 0 439
Write-off of deposits and pre-acquisition costs 75 0
Other Homebuilding [Member]
    
Segment Reporting Information    
Land and community valuation adjustments $ 283 [1] $ 814 [1]
[1] Primarily write-offs of capitalized interest related to land and community valuation adjustments