XML 83 R48.htm IDEA: XBRL DOCUMENT v3.22.0.1
Exploration and Evaluation Assets - Summary of Capitalized Costs on Projects (Detail) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of exploration and expenditure assets [line items]    
Exploration and evaluation assets, beginning balance $ 274,722  
Exploration and evaluation assets, ending balance 326,543 $ 274,722
Acquisition cost [member]    
Disclosure of exploration and expenditure assets [line items]    
Exploration and evaluation assets, beginning balance 28,471 28,329
Additions 27 142
Dispositions (145)  
Exploration and evaluation assets, ending balance 28,353 28,471
Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Exploration and evaluation assets, beginning balance 246,251 224,052
Expense arising from exploration for and evaluation of mineral resources 51,939 22,199
Exploration and evaluation assets, ending balance 298,190 246,251
Rook 1 Property [member]    
Disclosure of exploration and expenditure assets [line items]    
Exploration and evaluation assets, beginning balance 216,585  
Exploration and evaluation assets, ending balance 261,176 216,585
Rook 1 Property [member] | Acquisition cost [member]    
Disclosure of exploration and expenditure assets [line items]    
Exploration and evaluation assets, beginning balance 235 235
Additions 0 0
Dispositions 0  
Exploration and evaluation assets, ending balance 235 235
Rook 1 Property [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Exploration and evaluation assets, beginning balance 216,350 199,784
Expense arising from exploration for and evaluation of mineral resources 44,591 16,566
Exploration and evaluation assets, ending balance 260,941 216,350
Other Athabasca Basin Properties [member]    
Disclosure of exploration and expenditure assets [line items]    
Exploration and evaluation assets, beginning balance 10,631  
Exploration and evaluation assets, ending balance 10,638 10,631
Other Athabasca Basin Properties [member] | Acquisition cost [member]    
Disclosure of exploration and expenditure assets [line items]    
Exploration and evaluation assets, beginning balance 1,458 1,458
Additions 0 0
Dispositions 0  
Exploration and evaluation assets, ending balance 1,458 1,458
Other Athabasca Basin Properties [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Exploration and evaluation assets, beginning balance 9,173 9,164
Expense arising from exploration for and evaluation of mineral resources 7 9
Exploration and evaluation assets, ending balance 9,180 9,173
General exploration and drilling [Member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 10,117 4,807
General exploration and drilling [Member] | Rook 1 Property [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 6,502 1,407
General exploration and drilling [Member] | Other Athabasca Basin Properties [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 0 5
Environmental, permitting, and engagement [Member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 15,156 6,863
Environmental, permitting, and engagement [Member] | Rook 1 Property [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 15,154 6,726
Environmental, permitting, and engagement [Member] | Other Athabasca Basin Properties [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 0 0
Technical, engineering and design [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 13,894 4,383
Technical, engineering and design [member] | Rook 1 Property [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 13,893 4,158
Technical, engineering and design [member] | Other Athabasca Basin Properties [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 0 0
Geochemistry and assays [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 333 318
Geochemistry and assays [member] | Rook 1 Property [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 0 0
Geochemistry and assays [member] | Other Athabasca Basin Properties [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 0 0
Geological and Geophysical [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 898 35
Geological and Geophysical [member] | Rook 1 Property [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 116 0
Geological and Geophysical [member] | Other Athabasca Basin Properties [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 7 4
Labour and Wages [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 5,740 4,066
Labour and Wages [member] | Rook 1 Property [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 4,925 2,925
Labour and Wages [member] | Other Athabasca Basin Properties [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 0 0
Share-based Payments [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 5,257 1,516
Share-based Payments [member] | Rook 1 Property [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 3,696 1,281
Share-based Payments [member] | Other Athabasca Basin Properties [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 0 0
Travel [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 544 211
Travel [member] | Rook 1 Property [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 305 69
Travel [member] | Other Athabasca Basin Properties [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 0 0
IsoEnergy Ltd. [member]    
Disclosure of exploration and expenditure assets [line items]    
Exploration and evaluation assets, beginning balance 47,506  
Exploration and evaluation assets, ending balance 54,729 47,506
IsoEnergy Ltd. [member] | Acquisition cost [member]    
Disclosure of exploration and expenditure assets [line items]    
Exploration and evaluation assets, beginning balance 26,778 26,636
Additions 27 142
Dispositions (145)  
Exploration and evaluation assets, ending balance 26,660 26,778
IsoEnergy Ltd. [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Exploration and evaluation assets, beginning balance 20,728 15,104
Expense arising from exploration for and evaluation of mineral resources 7,341 5,624
Exploration and evaluation assets, ending balance 28,069 20,728
IsoEnergy Ltd. [member] | General exploration and drilling [Member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 3,615 3,395
IsoEnergy Ltd. [member] | Environmental, permitting, and engagement [Member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 2 137
IsoEnergy Ltd. [member] | Technical, engineering and design [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 1 225
IsoEnergy Ltd. [member] | Geochemistry and assays [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 333 318
IsoEnergy Ltd. [member] | Geological and Geophysical [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 775 31
IsoEnergy Ltd. [member] | Labour and Wages [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 815 1,141
IsoEnergy Ltd. [member] | Share-based Payments [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources 1,561 235
IsoEnergy Ltd. [member] | Travel [member] | Deferred Exploration Costs [member]    
Disclosure of exploration and expenditure assets [line items]    
Expense arising from exploration for and evaluation of mineral resources $ 239 $ 142