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ACQUISITION - Narrative (Details) (MDT Personnel, LLC, USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 29, 2013
Feb. 04, 2013
state
branch
MDT Personnel, LLC
   
Business Acquisition [Line Items]    
Total consideration paid   $ 53.2
Number of branch locations operated by acquiree   105
Number of states in which acquiree operates   25
Number of acquired entity's branches consolidated   65
Integration related costs 2.2  
Integration related costs accrual $ 1.6