Name:	dei_DocumentPeriodEndDate
Namespace Prefix:	dei_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

Sales net of retuens and allowances of Beauty, Health & Fitness categories

No definition available.

Name:	evlv_BeautyHealthFitnessNetSales
Namespace Prefix:	evlv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Sales less returns and allowances for Fashion, Apparrel, Outerwear and Accessories categories

No definition available.

Name:	evlv_FashionNetSales
Namespace Prefix:	evlv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Sales net of returns and aloowacnes for Home & Electronics categories

No definition available.

Name:	evlv_HomeElectronicsNetSales
Namespace Prefix:	evlv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Net sales of Jewelry & Watch categories

No definition available.

Name:	evlv_JewelryWatchesNetSales
Namespace Prefix:	evlv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Sales net of returns and allowances for non-merchandise sales and smaller merchandise categories not included in major reporting units

No definition available.

Name:	evlv_NetSalesOther
Namespace Prefix:	evlv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688