Annual report pursuant to Section 13 and 15(d)

Supplemental Cash Flow Information (Details)

v2.4.1.9
Supplemental Cash Flow Information (Details) (USD $)
0 Months Ended 12 Months Ended
Nov. 17, 2014
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Supplemental Cash Flow Elements [Abstract]        
Document Period End Date   Jan. 31, 2015    
Stock Issued During Period, Shares, Acquisitions 178,842us-gaap_StockIssuedDuringPeriodSharesAcquisitions 178,842us-gaap_StockIssuedDuringPeriodSharesAcquisitions    
Interest paid   $ 1,470,000us-gaap_InterestPaid $ 1,259,000us-gaap_InterestPaid $ 1,959,000us-gaap_InterestPaid
Income taxes paid   30,000us-gaap_IncomeTaxesPaid 16,000us-gaap_IncomeTaxesPaid 27,000us-gaap_IncomeTaxesPaid
Common stock purchase warrants forfeited   0evlv_CommonStockPurchaseWarrantsForfeitedNoncashTransaction 0evlv_CommonStockPurchaseWarrantsForfeitedNoncashTransaction 34,000evlv_CommonStockPurchaseWarrantsForfeitedNoncashTransaction
Deferred financing costs included in accrued liabilities   0evlv_DeferredFinancingCostsIncludedInAccruedLiabilities 20,000evlv_DeferredFinancingCostsIncludedInAccruedLiabilities 0evlv_DeferredFinancingCostsIncludedInAccruedLiabilities
Property and equipment purchases included in accounts payable   2,016,000evlv_PropertyAndEquipmentPurchasesIncludedInAccountsPayable 521,000evlv_PropertyAndEquipmentPurchasesIncludedInAccountsPayable 48,000evlv_PropertyAndEquipmentPurchasesIncludedInAccountsPayable
Intangible asset purchase included in accrued liabilities   0evlv_IntangibleAssetPurchaseIncludedInAccruedLiabilities 0evlv_IntangibleAssetPurchaseIncludedInAccruedLiabilities 2,830,000evlv_IntangibleAssetPurchaseIncludedInAccruedLiabilities
Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants   533,000us-gaap_StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants 0us-gaap_StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants 0us-gaap_StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants
Stock Issued During Period, Value, Acquisitions $ 1,044,000us-gaap_StockIssuedDuringPeriodValueAcquisitions $ 1,044,000us-gaap_StockIssuedDuringPeriodValueAcquisitions $ 0us-gaap_StockIssuedDuringPeriodValueAcquisitions $ 0us-gaap_StockIssuedDuringPeriodValueAcquisitions