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Favorable and Unfavorable Leases (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 02, 2017
Apr. 03, 2016
Leases, Acquired-in-Place, Market Adjustment [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Amortization expense $ 200 $ 200
Amortization Expense, Expected Full Year 800  
Next Fiscal Year 900  
Second Fiscal Year 800  
Third Fiscal Year 700  
Fourth Fiscal Year 600  
Fifth Fiscal Year 600  
2017 Acquisitions [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Favorable leases 720  
Unfavorable leases $ 2,518