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Property and Equipment - Summary of Detailed Information about Property, Plant and Equipment (Detail) - CAD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | $ 5,048 |
Balance at end of year | 5,404 | $ 5,048
At Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 16,613 | 16,357
Additions | 6,328 | 256
Disposals | (101) |
Transfer to lease receivable | (4,100) |
Disposals due to deconsolidation of IsoEnergy | (172) |
Balance at end of year | 18,568 | 16,613
Accumulated Depreciation [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 11,565 | 9,738
Disposals | (81) |
Depreciation | 1,814 | 1,827
Disposals due to deconsolidation of IsoEnergy | (134) |
Balance at end of year | 13,164 | 11,565
Software [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 144 |
Balance at end of year | 65 | 144
Software [member] | At Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 1,359 | 1,355
Additions | 0 | 4
Transfer to lease receivable | 0 |
Disposals due to deconsolidation of IsoEnergy | (65) |
Balance at end of year | 1,294 | 1,359
Software [member] | Accumulated Depreciation [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 1,215 | 1,043
Depreciation | 79 | 172
Disposals due to deconsolidation of IsoEnergy | (65) |
Balance at end of year | 1,229 | 1,215
Computer Equipment [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 103 |
Balance at end of year | 86 | 103
Computer Equipment [member] | At Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 619 | 497
Additions | 66 | 122
Transfer to lease receivable | 0 |
Disposals due to deconsolidation of IsoEnergy | 0 |
Balance at end of year | 685 | 619
Computer Equipment [member] | Accumulated Depreciation [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 516 | 427
Depreciation | 83 | 89
Disposals due to deconsolidation of IsoEnergy | 0 |
Balance at end of year | 599 | 516
Field Equipment and Vehicles [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 1,962 |
Balance at end of year | 3,187 | 1,962
Field Equipment and Vehicles [member] | At Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 6,665 | 6,645
Additions | 6,009 | 20
Disposals | (101) |
Transfer to lease receivable | (4,100) |
Disposals due to deconsolidation of IsoEnergy | (107) |
Balance at end of year | 8,366 | 6,665
Field Equipment and Vehicles [member] | Accumulated Depreciation [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 4,703 | 4,180
Disposals | (81) |
Depreciation | 626 | 523
Disposals due to deconsolidation of IsoEnergy | (69) |
Balance at end of year | 5,179 | 4,703
Office Furniture and Leasehold Improvements [Member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 2,793 |
Balance at end of year | 2,066 | 2,793
Office Furniture and Leasehold Improvements [Member] | At Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 5,891 | 5,781
Additions | 253 | 110
Disposals | 0 |
Transfer to lease receivable | 0 |
Disposals due to deconsolidation of IsoEnergy | 0 |
Balance at end of year | 6,144 | 5,891
Office Furniture and Leasehold Improvements [Member] | Accumulated Depreciation [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 3,098 | 2,116
Disposals | 0 |
Depreciation | 980 | 982
Disposals due to deconsolidation of IsoEnergy | 0 |
Balance at end of year | 4,078 | 3,098
Road [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 46 |
Balance at end of year | 0 | 46
Road [member] | At Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 2,079 | 2,079
Transfer to lease receivable | 0 |
Disposals due to deconsolidation of IsoEnergy | 0 |
Balance at end of year | 2,079 | 2,079
Road [member] | Accumulated Depreciation [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Balance at beginning of year | 2,033 | 1,972
Depreciation | 46 | 61
Disposals due to deconsolidation of IsoEnergy | 0 |
Balance at end of year | $ 2,079 | $ 2,033

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- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph e -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_e_i&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The decrease in property, plant and equipment resulting from the loss of control of a subsidiary. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_e&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of depreciation of property, plant and equipment. [Refer: Depreciation and amortisation expense; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph e -Clause vii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_e_vii&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 75 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_75_a&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. Note that right-of-use assets are not included. [Contrast: Property, plant and equipment including right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_e&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 54 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_a&doctype=Standard -URIDate 2023-03-23 + Details
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