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Stock-Based Compensation (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jul. 28, 2016
May 20, 2015
Dec. 31, 2016
Jan. 02, 2016
Dec. 28, 2013
May 31, 2008
Narrative Disclosures [Abstract]            
Stock-based compensation provision     $ 1,468 $ 1,636    
Stock compensation, tax benefit     100 $ 400    
Unrecognized share based compensation expense     $ 1,400      
Unrecognized share based compensation costs, amortization period (years)     2 years 1 month 6 days      
Stock Options [Member]            
Narrative Disclosures [Abstract]            
Maximum remaining contractual term (years)     6 years      
Vesting period (years)     4 years      
RSUs [Member]            
Narrative Disclosures [Abstract]            
Vesting period (years)     4 years      
Shares granted (shares)     20,961 86,994    
RSU fair value     $ 300 $ 600    
Performance Shares [Member]            
Narrative Disclosures [Abstract]            
Shares granted (shares)     0 73,750    
2007 Long-term Equity Incentive Plan [Member]            
Narrative Disclosures [Abstract]            
Number of shares authorized for issuance (shares)           562,500
2007 Long-term Equity Incentive Plan [Member] | Stock Options [Member]            
Narrative Disclosures [Abstract]            
Number of additional shares authorized for issuance (shares)         130,000  
Director [Member] | RSUs [Member]            
Narrative Disclosures [Abstract]            
Vesting period (years)   1 year        
Shares granted (shares) 20,961 14,181        
Executives [Member] | RSUs [Member]            
Narrative Disclosures [Abstract]            
Vesting period (years)   4 years        
Shares granted (shares)   72,813        
Executives [Member] | Performance Shares [Member]            
Narrative Disclosures [Abstract]            
Shares granted (shares)   73,750 0