XML 156 R105.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Fair value measurement - Narrative (Details) | 12 Months Ended
--- | ---
Dec. 31, 2023
FAIR VALUE MEASUREMENT [Abstract] |
Considerations to minimum cash guarantee, period | 4 years

X
- References No definition available. + Details
Name: | ngd_FAIRVALUEMEASUREMENTAbstract
Namespace Prefix: | ngd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Non-Current Derivative Financial Assets, Considerations To Minimum Cash Guarantee, Period + References No definition available. + Details
Name: | ngd_NonCurrentDerivativeFinancialAssetsConsiderationsToMinimumCashGuaranteePeriod
Namespace Prefix: | ngd_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration