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Warrants (Details) - Schedule of reconciliation of the beginning and ending balances of warrants liability - Fair Value, Inputs, Level 3 [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Warrants (Details) - Schedule of reconciliation of the beginning and ending balances of warrants liability [Line Items]
Beginning balance	$ 1,152
Fair value change of the issued warrants included in earnings	(61)
Ending balance	$ 1,091

X

- Definition

It represents the fair value of issued warrants.

+ References

No definition available.

+ Details

Name:	negg_FairValueOfIssuedWarrants
Namespace Prefix:	negg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Fair Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

No definition available.

+ Details

Name:	negg_WarrantsAndRightsOutstandingFairValue
Namespace Prefix:	negg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	negg_WarrantsDetailsScheduleofreconciliationofthebeginningandendingbalancesofwarrantsliabilityLineItems
Namespace Prefix:	negg_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: