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Note 15 - Other Income (Details Textual) - Other Nonoperating Income (Expense) [Member] - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Recognized for Merchant Deposit Reserves Reversed	$ 1,100,000
Income from Reversal of Accounts Payable Previously Recorded, Not Deemed to Be Payable		$ 675,000

X

- Definition

Represents the amount recorded during the period for income attributable to the reversal of accounts payable recorded by the Company in a previous period not deemed to be payable, per statutory requirements.

+ References

No definition available.

+ Details

Name:	nete_IncomeFromReversalOfAccountsPayablePreviouslyRecordedNotDeemedToBePayable
Namespace Prefix:	nete_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of income recognized for merchant deposit reserves that reversed during period.

+ References

No definition available.

+ Details

Name:	nete_IncomeRecognizedForMerchantDepositReservesReversed
Namespace Prefix:	nete_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_OtherNonoperatingIncomeExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: