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ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION (Acquisitions) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 02, 2016
Dec. 01, 2015
Jan. 02, 2015
Sep. 30, 2016
Sep. 30, 2015
Acquisitions          
Net cash consideration       $ 24,805 $ 5,239
LDS | Transportation Management (ABF Logistics)          
Acquisitions          
Total consideration $ 25,000        
Cash consideration 17,000        
Contingent consideration $ 8,000        
Contingent consideration period 2 years        
Bear Transportation Services, L.P. | Transportation Management (ABF Logistics)          
Acquisitions          
Net cash consideration   $ 24,400      
Smart Lines Transportation Group, LLC | Transportation Management (ABF Logistics)          
Acquisitions          
Net cash consideration     $ 5,200