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
Dec. 31, 2011
Minimum Lease Payments  
2012 $ 43,922
2013 28,924
2014 18,608
2015 12,901
2016 8,969
Thereafter 18,783
Total minimum lease payments $ 132,107