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NOTE 6 - PROPERTY AND EQUIPMENT (Details) - Property, Plant and Equipment (USD $)
In Thousands, unless otherwise specified
Dec. 27, 2014
Dec. 28, 2013
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 11,703us-gaap_PropertyPlantAndEquipmentGross $ 10,496us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation and amortization (9,643)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (7,866)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
2,060eng_PropertyPlantAndEquipmentNetOfAccumulatedDepreciation 2,630eng_PropertyPlantAndEquipmentNetOfAccumulatedDepreciation
Property and equipment implementations in process 14us-gaap_LeaseholdImprovementsGross 25us-gaap_LeaseholdImprovementsGross
Property and equipment, net 2,074us-gaap_PropertyPlantAndEquipmentNet 2,655us-gaap_PropertyPlantAndEquipmentNet
Software and Software Development Costs [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 7,576us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
6,441us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 1,043us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_EquipmentMember
981us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_EquipmentMember
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 542us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
537us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
Building and Building Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 2,383us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingAndBuildingImprovementsMember
2,379us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingAndBuildingImprovementsMember
Vehicles [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 159us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_VehiclesMember
$ 158us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_VehiclesMember