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Lease Commitments - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Jan. 04, 2014
Leases [Abstract]      
Total rent expense $ 4.8 $ 4.5 $ 4.8
Capital Leased Assets [Line Items]      
Basis of assets under capital leases 22.1 16.4  
Net book value of assets under capital leases $ 11.5 $ 9.0  
Minimum      
Capital Leased Assets [Line Items]      
Capital lease maturity 3 years    
Capital lease interest rate 4.00%    
Maximum      
Capital Leased Assets [Line Items]      
Capital lease maturity 7 years    
Capital lease interest rate 9.10%