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Inventory And Land Held for Sale (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Inventory Disclosure [Abstract]
Capitalized interest related to inventory impairments expensed to cost of revenues	$ 1,900,000	$ 1,000,000	$ 4,900,000	$ 2,300,000
Number of Communities Assessed for Impairment	6
Net realizable value adjustments - land held for sale	249,000	143,000	1,252,000	(106,000)
Write-off of deposits and pre-acquisition costs	$ 893,000	$ 2,296,000	$ 1,798,000	$ 6,628,000