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Exploration and Evaluation Assets - Schedule of Exploration and Evaluation Assets (Details) - CAD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | $ 38,633 |
Acquisition costs - cash |  |
Balance at the end of the year | 39,103 | 38,633
Exploration and Evaluation Assets Arising From Acquisition [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 720 | 602
Acquisition costs - cash | 22 | 118
Impairment | (83) |
Balance at the end of the year | 659 | 720
Exploration and Evaluation Assets Arising From Acquisition [Member] | Canada [Member] | Post Creek Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 298 |
Acquisition costs - cash | 10 |
Impairment |  |
Balance at the end of the year | 308 | 298
Exploration and Evaluation Assets Arising From Acquisition [Member] | Canada [Member] | Halcyon Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 230 |
Acquisition costs - cash | 8 |
Impairment |  |
Balance at the end of the year | 238 | 230
Exploration and Evaluation Assets Arising From Acquisition [Member] | Canada [Member] | Quetico Claims [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 42 |
Acquisition costs - cash |  |
Impairment |  |
Balance at the end of the year | 42 | 42
Exploration and Evaluation Assets Arising From Acquisition [Member] | Canada [Member] | Loveland (Enid Creek) Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 83 |
Acquisition costs - cash |  |
Impairment | (83) |
Balance at the end of the year |  | 83
Exploration and Evaluation Assets Arising From Acquisition [Member] | Canada [Member] | Lingman Lake [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 14 |
Acquisition costs - cash |  |
Impairment |  |
Balance at the end of the year | 14 | 14
Exploration and Evaluation Assets Arising From Acquisition [Member] | United States [Member] | Section 35 Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 11 | 8
Acquisition costs - cash |  | 3
Impairment |  |
Balance at the end of the year | 11 | 11
Exploration and Evaluation Assets Arising From Acquisition [Member] | Greenland [Member] | Maniitsoq Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 42 | 42
Acquisition costs - cash | 4 |
Impairment |  |
Balance at the end of the year | 46 | 42
Exploration and Evaluation Assets Arising From Acquisition [Member] | Canada [Member] | Post Creek Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 298 | 288
Acquisition costs - cash |  | 10
Balance at the end of the year |  | 298
Exploration and Evaluation Assets Arising From Acquisition [Member] | Canada [Member] | Halcyon Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 230 | 222
Acquisition costs - cash |  | 8
Balance at the end of the year |  | 230
Exploration and Evaluation Assets Arising From Acquisition [Member] | Canada [Member] | Quetico Claims [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 42 | 42
Acquisition costs - cash |  |
Balance at the end of the year |  | 42
Exploration and Evaluation Assets Arising From Acquisition [Member] | Canada [Member] | Loveland (Enid Creek) Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 83 |
Acquisition costs - cash |  | 83
Balance at the end of the year |  | 83
Exploration and Evaluation Assets Arising From Acquisition [Member] | Canada [Member] | Lingman Lake [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 14 |
Acquisition costs - cash |  | 14
Balance at the end of the year |  | 14
Exploration and Evaluation Assets Arising From Exploration [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 37,913 | 63,877
Administration | 12 | 14
Corporate social responsibility |  | 3
Property maintenance | 37 | 31
Drilling | 215 | 261
Environment, health & safety |  | 8
Geology | 242 | 200
Geophysics | 105 | 39
Helicopter charter aircraft (recovery) | 8 | (21)
Camp site cleanup | 267 |
Infrastructure |  | 11
Impairment | (355) | (26,510)
Increase in exploration and evaluation assets | 531 | (25,964)
Balance at the end of the year | 38,445 | 37,913
Exploration and Evaluation Assets Arising From Exploration [Member] | Canada [Member] | Post Creek Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 1,498 |
Administration | 2 |
Property maintenance | 6 |
Drilling |  |
Geology | 21 |
Geophysics | 2 |
Helicopter charter aircraft (recovery) |  |
Camp site cleanup |  |
Impairment |  |
Increase in exploration and evaluation assets | 31 |
Balance at the end of the year | 1,529 | 1,498
Exploration and Evaluation Assets Arising From Exploration [Member] | Canada [Member] | Halcyon Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 233 |
Administration | 1 |
Property maintenance | 5 |
Drilling |  |
Geology | 13 |
Geophysics |  |
Camp site cleanup |  |
Impairment |  |
Increase in exploration and evaluation assets | 19 |
Balance at the end of the year | 252 | 233
Exploration and Evaluation Assets Arising From Exploration [Member] | Canada [Member] | Quetico Claims [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 39 |
Administration |  |
Property maintenance | 1 |
Drilling | 5 |
Geology | 69 |
Geophysics | 28 |
Helicopter charter aircraft (recovery) |  |
Camp site cleanup |  |
Impairment |  |
Increase in exploration and evaluation assets | 103 |
Balance at the end of the year | 142 | 39
Exploration and Evaluation Assets Arising From Exploration [Member] | Canada [Member] | Loveland (Enid Creek) Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 33 |
Administration |  |
Property maintenance |  |
Drilling | 167 |
Geology | 83 |
Geophysics | 72 |
Helicopter charter aircraft (recovery) |  |
Camp site cleanup |  |
Impairment | (355) |
Increase in exploration and evaluation assets | (33) |
Balance at the end of the year |  | 33
Exploration and Evaluation Assets Arising From Exploration [Member] | Canada [Member] | Lingman Lake [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 13 |
Administration |  |
Property maintenance |  |
Drilling |  |
Geology |  |
Geophysics |  |
Helicopter charter aircraft (recovery) |  |
Camp site cleanup |  |
Increase in exploration and evaluation assets |  |
Balance at the end of the year | 13 | 13
Exploration and Evaluation Assets Arising From Exploration [Member] | United States [Member] | Section 35 Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | (11) |
Administration |  |
Corporate social responsibility |  |
Property maintenance |  |
Drilling |  |
Environment, health & safety |  |
Geology |  |
Geophysics |  |
Helicopter charter aircraft (recovery) |  |
Camp site cleanup |  |
Infrastructure |  |
Impairment |  | (11)
Increase in exploration and evaluation assets |  | (11)
Balance at the end of the year |  | (11)
Exploration and Evaluation Assets Arising From Exploration [Member] | Greenland [Member] | Maniitsoq Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 36,108 | 62,215
Administration | 9 | 12
Corporate social responsibility |  |
Property maintenance | 25 | 17
Drilling | 43 | 197
Environment, health & safety |  | 8
Geology | 56 | 140
Geophysics | 3 | 28
Helicopter charter aircraft (recovery) | 8 | (21)
Camp site cleanup | 267 |
Infrastructure |  | 11
Impairment |  | (26,499)
Increase in exploration and evaluation assets | 411 | (26,107)
Balance at the end of the year | 36,519 | 36,108
Exploration and Evaluation Assets Arising From Exploration [Member] | Canada [Member] | Post Creek Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 1,498 | 1,431
Administration |  | 1
Corporate social responsibility |  | 2
Property maintenance |  | 7
Drilling |  | 32
Environment, health & safety |  |
Geology |  | 24
Geophysics |  | 1
Helicopter charter aircraft (recovery) |  |
Infrastructure |  |
Impairment |  |
Increase in exploration and evaluation assets |  | 67
Balance at the end of the year |  | 1,498
Exploration and Evaluation Assets Arising From Exploration [Member] | Canada [Member] | Halcyon Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 233 | 209
Administration |  | 1
Corporate social responsibility |  | 1
Property maintenance |  | 7
Drilling |  |
Environment, health & safety |  |
Geology |  | 14
Geophysics |  | 1
Helicopter charter aircraft (recovery) |  |
Infrastructure |  |
Impairment |  |
Increase in exploration and evaluation assets |  | 24
Balance at the end of the year |  | 233
Exploration and Evaluation Assets Arising From Exploration [Member] | Canada [Member] | Quetico Claims [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 39 | 22
Administration |  |
Corporate social responsibility |  |
Property maintenance |  |
Drilling |  | 12
Environment, health & safety |  |
Geology |  | 1
Geophysics |  | 4
Helicopter charter aircraft (recovery) |  |
Infrastructure |  |
Impairment |  |
Increase in exploration and evaluation assets |  | 17
Balance at the end of the year |  | 39
Exploration and Evaluation Assets Arising From Exploration [Member] | Canada [Member] | Loveland (Enid Creek) Property [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | 33 |
Administration |  |
Corporate social responsibility |  |
Property maintenance |  |
Drilling |  | 15
Environment, health & safety |  |
Geology |  | 15
Geophysics |  | 3
Helicopter charter aircraft (recovery) |  |
Infrastructure |  |
Impairment |  |
Increase in exploration and evaluation assets |  | 33
Balance at the end of the year |  | 33
Exploration and Evaluation Assets Arising From Exploration [Member] | Canada [Member] | Lingman Lake [Member] |  |
Disclosure of Exploration and Evaluation Assets [Line Items] |  |
Balance at the beginning of the year | $ 13 |
Administration |  |
Corporate social responsibility |  |
Property maintenance |  |
Drilling |  | 5
Environment, health & safety |  |
Geology |  | 6
Geophysics |  | 2
Helicopter charter aircraft (recovery) |  |
Increase in exploration and evaluation assets |  | 13
Balance at the end of the year |  | $ 13

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