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Intangible Assets (Details Textual) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Goodwill [Line Items]        
Net book value of the goodwill attributable to the international reporting unit $ 906,592 $ 800,621 $ 796,278  
Estimated fair market value of our international reporting unit 20% or more      
Estimated fair value of the franchises 10.00%      
Franchise value impairment charges 6,944      
Goodwill, Impaired, Accumulated Impairment Loss       606,349
Indefinite Lived Intangibles, Impaired, Accumulated Impairment Loss       37,110
Impairment charges of intangible assets 0 0 0  
International reporting unit [Member]
       
Goodwill [Line Items]        
Net book value of the goodwill attributable to the international reporting unit $ 337,914