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BASIS OF PRESENTATION AND PRINCIPLES OF CONSOLIDATION (Details Narrative)	12 Months Ended
	Dec. 31, 2017	Mar. 31, 2018
TOT Group [Member]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	100.00%
Florida Aptito LLC [Member]
Percentage of ownership noncontrolling interest		80.00%

X

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=nete_TotGroupMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=nete_FloridaAptitoLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: