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Retirement Plans (Details) (USD $)
12 Months Ended
Dec. 30, 2012
Rate
Jan. 01, 2012
Jan. 02, 2011
Retirement Plans Disclosures [Line Items]      
Defined Contribution Plan, Employer Matching Contribution, Percent 50.00%    
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Amount $ 520    
Defined Contribution Plan, Requisite Service Period, Hours of Service 1,000    
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent 50.00%    
Defined Contribution Plan, Cost Recognized 327,000 292,000 297,000
Deferred Compensation Arrangements, Interest Rate 8.00%    
Deferred Compensation Arrangement with Individual, Employer Contribution 0    
Deferred Compensation Liability, Classified, Noncurrent $ 282,000 $ 965,000  
Minimum [Member]
     
Retirement Plans Disclosures [Line Items]      
Defined Contribution Plan, Vesting Period of Company Contributions 1 year    
Maximum [Member]
     
Retirement Plans Disclosures [Line Items]      
Defined Contribution Plan, Vesting Period of Company Contributions 5 years