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Segment Reporting (Total Assets by Segment) (Details) - USD ($)
$ in Thousands
Dec. 27, 2015
Dec. 28, 2014
Segment Reporting, Asset Reconciling Item [Line Items]    
Assets $ 3,032,569 $ 3,338,240
U.S. Segment [Member]    
Segment Reporting, Asset Reconciling Item [Line Items]    
Assets 2,405,196 2,376,331
International Segment [Member]    
Segment Reporting, Asset Reconciling Item [Line Items]    
Assets 472,518 622,866
Corporate, non-segment [Member]    
Segment Reporting, Asset Reconciling Item [Line Items]    
Assets $ 154,855 $ 339,043