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Leases (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 25, 2013
Operating Leased Assets [Line Items]  
Term of typical renewal options on land and building leases 5 years
Capital Commitments:  
2014 $ 7,379
2015 5,996
2016 4,983
2017 4,204
2018 3,047
Thereafter 10,236
Total 35,845
Less imputed interest 15,772
Present value of capital lease obligations 20,073
Operating Commitments:  
2014 33,961
2015 29,571
2016 26,827
2017 23,698
2018 19,514
Thereafter 69,396
Total 202,967
Operating Lease Receipts:  
2014 33,275
2015 30,053
2016 28,018
2017 26,000
2018 22,963
Thereafter 115,747
Total $ 256,056
Minimum [Member]
  
Operating Leased Assets [Line Items]  
Initial terms of land and building leases 10 years
Maximum [Member]
  
Operating Leased Assets [Line Items]  
Initial terms of land and building leases 15 years