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Organization and Description of Business and Accounting Policies (Details Textual) (USD $)	12 Months Ended
	Jan. 02, 2015	Jan. 03, 2014	Dec. 28, 2012
Organization And Description Of Business And Accounting Policies [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total	$ (955,000)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	$ (1,327,000)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	$ (689,000)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
Foreign Currency Transaction Gain (Loss), before Tax	(896,000)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax	39,000us-gaap_ForeignCurrencyTransactionGainLossBeforeTax	111,000us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Goodwill	1,786,000us-gaap_Goodwill	1,786,000us-gaap_Goodwill
Advertising Expense	$ 2,800,000us-gaap_AdvertisingExpense	$ 2,100,000us-gaap_AdvertisingExpense	$ 1,800,000us-gaap_AdvertisingExpense
Concentration Risk, Percentage	5.00%us-gaap_ConcentrationRiskPercentage1
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]
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration Risk, Percentage	9.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_IncomeStatementLocationAxis = us-gaap_SalesMember	11.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_IncomeStatementLocationAxis = us-gaap_SalesMember	11.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_IncomeStatementLocationAxis = us-gaap_SalesMember
Trade Accounts Receivable [Member]
Organization And Description Of Business And Accounting Policies [Line Items]
Concentration Risk, Percentage	10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_TradeAccountsReceivableMember	10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_TradeAccountsReceivableMember

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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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