Goodwill And Intangible Assets (Analysis Of Goodwill And Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Goodwill [Line Items]
Goodwill and intangible assets, Net balance	$ 325,252	$ 328,735
Additions
Amortization	(2,978)	(3,483)
Goodwill and intangible assets, Net balance	322,274	325,252
Gross balance	340,652
Accumulated amortization	(11,356)
Impairments	(7,022)
Net balance	322,274	325,252
Goodwill [Member]
Goodwill [Line Items]
Goodwill and intangible assets, Net balance		268,376
Additions
Goodwill and intangible assets, Net balance	268,376	268,376
Gross balance	268,532
Impairments	(156)
Net balance	268,376	268,376
Intangible Assets With Indefinite Lives [Member]
Goodwill [Line Items]
Goodwill and intangible assets, Net balance		23,920
Additions
Goodwill and intangible assets, Net balance	23,920	23,920
Gross balance	23,920
Net balance	23,920	23,920
Intangible Assets With Finite Lives [Member]
Goodwill [Line Items]
Goodwill and intangible assets, Net balance	32,956	36,439
Additions
Amortization	(2,978)	(3,483)
Goodwill and intangible assets, Net balance	29,978	32,956
Gross balance	48,200
Accumulated amortization	(11,356)
Impairments	(6,866)
Net balance	$ 29,978	$ 32,956