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Distribution Facility Expansion (Details) (USD $)
3 Months Ended 6 Months Ended
Aug. 01, 2015
Aug. 01, 2015
May 02, 2015
sqft
Future Distribution Facility Expansion [Line Items]      
Current Facility Square Footage     262,000evlv_CurrentFacilitySquareFootage
Expanded Facility Square Footage     600,000evlv_ExpandedFacilitySquareFootage
Buildings and Improvements, Gross     $ 20,000,000us-gaap_BuildingsAndImprovementsGross
Scenario, Forecast [Member]      
Future Distribution Facility Expansion [Line Items]      
Expected Significant Asset Acquisition   25,000,000evlv_ExpectedSignificantAssetAcquisition
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
 
Estimated Construction Costs, Remainder of Fiscal Year $ 5,400,000evlv_EstimatedConstructionCostsRemainderofFiscalYear
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember