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Consolidated Statements of Comprehensive Income (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jan. 03, 2015
Dec. 28, 2013
Dec. 29, 2012
Statement Of Income And Comprehensive Income [Abstract]      
Net income $ 10,038us-gaap_NetIncomeLoss $ 2,231us-gaap_NetIncomeLoss $ 1,438us-gaap_NetIncomeLoss
Other comprehensive income, net of tax:      
Recognition of accumulated foreign currency translation loss     35us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
Other comprehensive income, net of tax     35us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
Comprehensive income $ 10,038us-gaap_ComprehensiveIncomeNetOfTax $ 2,231us-gaap_ComprehensiveIncomeNetOfTax $ 1,473us-gaap_ComprehensiveIncomeNetOfTax