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Leases and Other Commitments (Tables)
12 Months Ended
Dec. 31, 2012
Leases And Other Commitments [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
    
(in thousands)  
2013 $ 131,737
2014   118,524
2015   98,013
2016   88,852
2017   76,573
Thereafter   260,129
  $ 773,828