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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
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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 |  |

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