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v3.22.1

Warrants (Details) - $ / shares | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Apr. 28, 2016 | Dec. 31, 2021 | Mar. 21, 2016 | Aug. 20, 2014 | Oct. 07, 2013
Warrants (Details) [Line Items] |  |  |  |  |
Purchase price (in Dollars per share) |  |  | $ 15.04 | $ 42.48 | $ 18.4
Warrants issued |  | 125,000 |  |  |
Warrant outstanding |  | 125,000 |  |  |
Share Purchase Agreement [Member] |  |  |  |  |
Warrants (Details) [Line Items] |  |  |  |  |
Warrants issued for services | 125,000 |  |  |  |
Warrants to purchase shares | 125,000 |  |  |  |
Purchase price (in Dollars per share) | $ 17.6 |  |  |  |

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- Definition Number of warrants issued for the period. + References No definition available. + Details
Name: | negg_WarrantIssued
Namespace Prefix: | negg_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Definition A stock warrant represents the right to purchase a company's stock at a specific price and at a specific date. A stock warrant is issued directly by a company to an investor. Stock options are purchased when it is believed the price of a stock will go up or down. Stock options are typically traded between investors. + References No definition available. + Details
Name: | negg_WarrantOutstanding
Namespace Prefix: | negg_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | negg_WarrantsDetailsLineItems
Namespace Prefix: | negg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of warrants issued for services. + References No definition available. + Details
Name: | negg_WarrantsIssuedForServices
Namespace Prefix: | negg_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Definition Warrants to purchase shares. + References No definition available. + Details
Name: | negg_WarrantsToPurchaseShares
Namespace Prefix: | negg_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | negg_TypeOfAgreementAxis=negg_SharePurchaseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |