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Organization and Description of Business and Accounting Policies (Details Textual) - USD ($) | 12 Months Ended
--- | ---
Jan. 01, 2016 | Jan. 02, 2015 | Jan. 03, 2014
Organization And Description Of Business And Accounting Policies [Line Items] |  |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total | $ 31,000 | $ (955,000) | $ (1,327,000)
Foreign Currency Transaction Gain (Loss), before Tax | (949,000) | (896,000) | 39,000
Goodwill | 1,786,000 | 1,786,000 |
Advertising Expense | $ 2,500,000 | 2,800,000 | 2,100,000
Prior Period Reclassification Adjustment |  | 127,000 | $ 203,000
Other Noncurrent Liabilities [Member] |  |  |
Organization And Description Of Business And Accounting Policies [Line Items] |  |  |
Prior Period Reclassification Adjustment |  | $ 75,000 |
Customer Relationships [Member] |  |  |
Organization And Description Of Business And Accounting Policies [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 10 years |  |
Developed technology [Member] | Minimum [Member] |  |  |
Organization And Description Of Business And Accounting Policies [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 3 years |  |
Developed technology [Member] | Maximum [Member] |  |  |
Organization And Description Of Business And Accounting Policies [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 10 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 |  |
Patents And Licences [Member] | Maximum [Member] |  |  |
Organization And Description Of Business And Accounting Policies [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 20 years |  |
Sales [Member] | One Customer [Member] |  |  |
Organization And Description Of Business And Accounting Policies [Line Items] |  |  |
Concentration Risk, Percentage | 15.00% | 10.00% | 11.00%
Sales [Member] | Two Customer [Member] |  |  |
Organization And Description Of Business And Accounting Policies [Line Items] |  |  |
Concentration Risk, Percentage | 10.00% |  | 11.00%
Trade Accounts Receivable [Member] |  |  |
Organization And Description Of Business And Accounting Policies [Line Items] |  |  |
Concentration Risk, Percentage | 10.00% | 10.00% |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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