Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Rent expense of lease      
Fixed rent expense $ 200,006 $ 186,893 $ 181,075
Contingent rent expense 76,272 68,824 57,704
Total facility lease expense $ 276,278 $ 255,717 $ 238,779