XML 113 R67.htm IDEA: XBRL DOCUMENT
v3.22.4

Long-term debt - Credit Facility (Details) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Adjusted EBITDA to Interest |  |
Long Term Debt [Line Items] |  |
Interest coverage ratio | 4.5 | 7.2
Net Debt to Adjusted EBITDA |  |
Long Term Debt [Line Items] |  |
Leverage ratio | 2.1 | 0.6
Secured Debt To Adjusted Ebitda Member |  |
Long Term Debt [Line Items] |  |
Secured leverage ratio | 0.2 | 0.1
Applicable Financial Covenant | Adjusted EBITDA to Interest |  |
Long Term Debt [Line Items] |  |
Interest coverage ratio | 3.0 |
Applicable Financial Covenant | Net Debt to Adjusted EBITDA |  |
Long Term Debt [Line Items] |  |
Leverage ratio | 4.5 |
Applicable Financial Covenant | Secured Debt To Adjusted Ebitda Member |  |
Long Term Debt [Line Items] |  |
Secured leverage ratio | 2.0 |

X
- Definition Ratio of interest coverage incurrence convenant of earnings before interest, taxes, depreciation, amortisation, impairment, and other non-cash adjustments to interest. + References No definition available. + Details
Name: | ngd_InterestCoverageRatio
Namespace Prefix: | ngd_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Ratio of leverage coverage incurrence convenant of earnings before interest, taxes, depreciation, amortisation, impairment, and other non-cash adjustments to leverage. + References No definition available. + Details
Name: | ngd_LeverageRatio
Namespace Prefix: | ngd_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Long Term Debt. + References No definition available. + Details
Name: | ngd_LongTermDebtLineItems
Namespace Prefix: | ngd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Ratio of secured leverage coverage incurrence covenant of earnings before interest, taxes, depreciation, amortisation, impairment, and other non-cash adjustments to leverage. + References No definition available. + Details
Name: | ngd_SecuredLeverageRatio
Namespace Prefix: | ngd_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis=ngd_AdjustedEbitdaToInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis=ngd_NetDebtToAdjustedEbitdaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ContinuingInvolvementInDerecognisedFinancialAssetsByTypeOfInstrumentAxis=ngd_SecuredDebtToAdjustedEbitdaMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=ngd_ApplicableFinancialCovenantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |