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SCHEDULE OF EXPLORATION AND EVALUATION ASSETS (Details) - CAD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
IfrsStatementLineItems [Line Items] |  |
Balance at the end of the period | $ 39,110 | $ 38,711
CANADA | Post Creek Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the end of the period | 1,848 | 1,818
CANADA | Halcyon Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the end of the period | 500 | 479
CANADA | Quetico Claims [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the end of the period | 196 | 154
CANADA | Loveland (Enid Creek) Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the end of the period |  |
GREENLAND | Lingman Lake [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the end of the period | 27 | 27
GREENLAND | Maniitsoq Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the end of the period | 36,539 | 36,233
Exploration And Evaluation Assets Arising From Acquisition [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period | 648 | 709
Acquisition costs - cash | 9 | 13
Balance at the end of the period | 657 | 722
Exploration And Evaluation Assets Arising From Acquisition [Member] | CANADA | Post Creek Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period | 308 | 298
Acquisition costs - cash | 5 | 5
Balance at the end of the period | 313 | 303
Exploration And Evaluation Assets Arising From Acquisition [Member] | CANADA | Halcyon Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period | 238 | 230
Acquisition costs - cash | 4 | 4
Balance at the end of the period | 242 | 234
Exploration And Evaluation Assets Arising From Acquisition [Member] | CANADA | Quetico Claims [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period |  | 42
Acquisition costs - cash |  |
Balance at the end of the period |  | 42
Exploration And Evaluation Assets Arising From Acquisition [Member] | GREENLAND | Quetico Claims [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period | 42 |
Acquisition costs - cash |  |
Balance at the end of the period | 42 |
Exploration And Evaluation Assets Arising From Acquisition [Member] | GREENLAND | Lingman Lake [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period | 14 | 14
Acquisition costs - cash |  |
Balance at the end of the period | 14 | 14
Exploration And Evaluation Assets Arising From Acquisition [Member] | GREENLAND | Maniitsoq Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period | 46 | 42
Acquisition costs - cash |  | 4
Balance at the end of the period | 46 | 46
Exploration And Evaluation Assets Arising From Acquisition [Member] | GREENLAND | Loveland (Enid Creek) Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period |  | 83
Acquisition costs - cash |  |
Balance at the end of the period |  | 83
Exploration And Evaluation Assets Arising From Exploration [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period | 38,455 | 37,924
Administration | 7 | 8
Property maintenance | 20 | 28
Camp operations | (95) |
Drilling | 21 | 172
Geology | 44 | 196
Geophysics | 1 | 98
Helicopter charter aircraft (recovery) |  |
Infrastructure |  |
Write-off |  | (437)
Increase in exploration and evaluation assets | (2) | 65
Balance at the end of the period | 38,453 | 37,989
Exploration And Evaluation Assets Arising From Exploration [Member] | CANADA | Post Creek Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period | 1,529 | 1,498
Administration |  |
Property maintenance | 1 | 6
Camp operations |  |
Drilling |  |
Geology | 5 | 10
Geophysics |  | 1
Helicopter charter aircraft (recovery) |  |
Infrastructure |  |
Write-off |  |
Increase in exploration and evaluation assets | 6 | 17
Balance at the end of the period | 1,535 | 1,515
Exploration And Evaluation Assets Arising From Exploration [Member] | CANADA | Halcyon Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period | 252 | 233
Administration |  |
Property maintenance | 1 | 5
Camp operations |  |
Drilling |  |
Geology | 5 | 6
Geophysics |  | 1
Helicopter charter aircraft (recovery) |  |
Infrastructure |  |
Write-off |  |
Increase in exploration and evaluation assets | 6 | 12
Balance at the end of the period | 258 | 245
Exploration And Evaluation Assets Arising From Exploration [Member] | CANADA | Quetico Claims [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period |  | 39
Administration |  |
Property maintenance |  |
Drilling |  | 6
Geology |  | 46
Geophysics |  | 21
Helicopter charter aircraft (recovery) |  |
Infrastructure |  |
Write-off |  |
Increase in exploration and evaluation assets |  | 73
Balance at the end of the period |  | 112
Exploration And Evaluation Assets Arising From Exploration [Member] | GREENLAND | Quetico Claims [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period | 142 |
Administration |  |
Property maintenance | 1 |
Camp operations |  |
Drilling |  |
Geology | 10 |
Geophysics | 1 |
Increase in exploration and evaluation assets | 12 |
Balance at the end of the period | 154 |
Exploration And Evaluation Assets Arising From Exploration [Member] | GREENLAND | Lingman Lake [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period | 13 | 13
Administration |  |
Property maintenance |  |
Camp operations |  |
Drilling |  |
Geology |  |
Geophysics |  |
Helicopter charter aircraft (recovery) |  |
Infrastructure |  |
Write-off |  |
Increase in exploration and evaluation assets |  |
Balance at the end of the period | 13 | 13
Exploration And Evaluation Assets Arising From Exploration [Member] | GREENLAND | Maniitsoq Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period | 36,519 | 36,108
Administration | 7 | 8
Property maintenance | 17 | 17
Camp operations | (95) |
Drilling | 21 |
Geology | 24 | 51
Geophysics |  | 3
Helicopter charter aircraft (recovery) |  |
Infrastructure |  |
Write-off |  |
Increase in exploration and evaluation assets | (26) | 79
Balance at the end of the period | $ 36,493 | 36,187
Exploration And Evaluation Assets Arising From Exploration [Member] | GREENLAND | Loveland (Enid Creek) Property [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the period |  | 33
Administration |  |
Property maintenance |  |
Drilling |  | 166
Geology |  | 83
Geophysics |  | 72
Helicopter charter aircraft (recovery) |  |
Infrastructure |  |
Write-off |  | (437)
Increase in exploration and evaluation assets |  | (116)
Balance at the end of the period |  | $ (83)

X
- Definition Assets exploration. + References No definition available. + Details
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- Definition The amount of exploration and evaluation assets. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- References No definition available. + Details
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- Definition Increase in exploration and evaluation assets. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
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- Definition Increase in exploration and evaluation assets through administration expenses. + References No definition available. + Details
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Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

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- Definition Increase through camp operations exploration and evaluation assets. + References No definition available. + Details
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Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Increase through drilling expenses exploration and evaluation assets. + References No definition available. + Details
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Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Increase through geology expenses, exploration and evaluation assets. + References No definition available. + Details
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Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
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Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
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- Definition Increase through helicopter related expenses exploration and evaluation assets. + References No definition available. + Details
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Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Increase through infrastructure related expenses exploration and evaluation assets. + References No definition available. + Details
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Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Increase in exploration and evaluation assets through Property maintenance. + References No definition available. + Details
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Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Increase through write off exploration and evaluation assets. + References No definition available. + Details
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Namespace Prefix: | WSCRF_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | WSCRF_TypeOfPropertyAxis=WSCRF_PostCreekPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | WSCRF_TypeOfPropertyAxis=WSCRF_HalcyonPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | WSCRF_TypeOfPropertyAxis=WSCRF_QueticoClaimsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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Namespace Prefix: |
Data Type: | na
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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