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Goodwill And Intangible Assets (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Jun. 30, 2010	Sep. 30, 2011 years	Sep. 30, 2010	Dec. 31, 2010	Dec. 31, 2009	Aug. 18, 2009 Centex [Member]
Goodwill		$ 240,541			$ 240,541	$ 240,541	$ 895,918	$ 1,500,000
Goodwill impairments	$ 240,541	$ 654,923	$ 1,400	$ 240,541	$ 656,298
Amortized life of intangible assets, years				20

X

- Definition

The useful life of all finite-lived intangible assets.

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Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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