Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Commitments And Contingencies (Schedule Of Rent Expense) (Details)

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Commitments And Contingencies (Schedule Of Rent Expense) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Property, Plant and Equipment [Line Items]  
2012 $ 11,822
2013   
Head lease payments 11,822
Property Rental Agreements [Member]
 
Property, Plant and Equipment [Line Items]  
2012 2,084
2013 1,199
2014 915
2015 923
2016 600
Thereafter 713
Head lease payments $ 6,434