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Organization and Description of Business and Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2016	Jan. 01, 2016	Jan. 02, 2015
Organization And Description Of Business And Accounting Policies [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total	$ 156	$ 31	$ (955)
Foreign Currency Transaction Gain (Loss), before Tax	(147)	(949)	(896)
Goodwill	1,786	1,786
Advertising Expense	$ 4,000	$ 2,500	$ 2,800
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	19.00%		11.00%
Sales [Member] | Two Customer [Member]
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration Risk, Percentage		15.00%
Trade Accounts Receivable [Member] | One Customer [Member]
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration Risk, Percentage	10.00%
Trade Accounts Receivable [Member] | Two Customer [Member]
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration Risk, Percentage	10.00%

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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.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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