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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

X

- Definition

Number of warrants issued for the period.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

X

- 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

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Namespace Prefix:	negg_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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Period Type:	duration

X

- 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

X

- 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

X

- 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

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: