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Organization and Description of Business and Accounting Policies (Details Textual) (USD $)
Share data in Millions, unless otherwise specified
 12 Months Ended
Jan. 03, 2014
Dec. 28, 2012
Dec. 30, 2011
Organization And Description Of Business And Accounting Policies [Line Items]      
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total $ (1,327,000) $ (689,000) $ 211,000
Foreign Currency Transaction Gain (Loss), before Tax 39,000 111,000 86,000
Goodwill 1,786,000 1,786,000  
Advertising Expense $ 2,100,000 $ 1,810,000 $ 1,306,000
Warrant Issued Under Agreement 1.4    
Sales [Member]
      
Organization And Description Of Business And Accounting Policies [Line Items]      
Concentration Risk, Percentage 13.00% 11.00% 11.00%
Trade Accounts Receivable [Member]
      
Organization And Description Of Business And Accounting Policies [Line Items]      
Concentration Risk, Percentage 10.00% 10.00%  
Customer Relationships [Member]
      
Organization And Description Of Business And Accounting Policies [Line Items]      
Finite-Lived Intangible Asset, Useful Life 10 years    
Patents And Licences [Member] | Maximum [Member]
      
Organization And Description Of Business And Accounting Policies [Line Items]      
Finite-Lived Intangible Asset, Useful Life 20 years    
Patents And Licences [Member] | Minimum [Member]
      
Organization And Description Of Business And Accounting Policies [Line Items]      
Finite-Lived Intangible Asset, Useful Life 3 years    
Developed Technology Rights [Member] | Maximum [Member]
      
Organization And Description Of Business And Accounting Policies [Line Items]      
Finite-Lived Intangible Asset, Useful Life 10 years    
Developed Technology Rights [Member] | Minimum [Member]
      
Organization And Description Of Business And Accounting Policies [Line Items]      
Finite-Lived Intangible Asset, Useful Life 3 years