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Assets by Segment (Detail) - USD ($)
$ in Thousands
Dec. 30, 2017
Dec. 31, 2016
Assets:    
Assets $ 2,659,724 $ 2,761,068
Operating Segments | DSD Segment    
Assets:    
Assets 2,270,179 2,344,616
Operating Segments | Warehouse Segment    
Assets:    
Assets 296,157 330,006
Other    
Assets:    
Assets [1] $ 93,388 $ 86,446
[1] Represents the company’s corporate head office assets including primarily cash and cash equivalents.