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Property And Equipment, Net (Schedule Of Property And equipment) (Details) (USD $)
In Thousands, unless otherwise specified
Jan. 02, 2015
Dec. 27, 2013
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 28,600us-gaap_PropertyPlantAndEquipmentGross $ 25,756us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation (14,847)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (12,737)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property, Plant and Equipment, Net, Total 13,753us-gaap_PropertyPlantAndEquipmentNet 13,019us-gaap_PropertyPlantAndEquipmentNet
Equipment [Member]    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 6,044us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_EquipmentMember
4,814us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_EquipmentMember
Software [Member]    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 21,604us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerSoftwareIntangibleAssetMember
19,815us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerSoftwareIntangibleAssetMember
Leasehold Improvements [Member]    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 454us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
518us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember
Furniture And Fixtures [Member]    
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 498us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
$ 609us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember