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Income Taxes - Schedule of Income Before Income Taxes (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 28, 2014
Dec. 29, 2013
Dec. 30, 2012
Income Tax Disclosure [Abstract]      
Domestic operations $ 6,627us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ 605us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ 8,018us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Foreign operations 465us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 481us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign  
Income before income taxes $ 7,092us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest $ 1,086us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest $ 8,018us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest