SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash and Marketable Securities in Trust Account (Details) - USD ($)	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Cash withdrawn from trust account in connection with redemption	$ 186,654,533	$ 0

The cash inflow associated with the amount withdrawn from Trust Accounts in connection with redemption.

No definition available.

Name:	netd_ProceedsFromCashWithdrawnFromTrustAccount
Namespace Prefix:	netd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration