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Note 9 - Exploration and Evaluation Assets (Details Textual) - CAD ($)
$ / shares in Units, $ in Thousands
 7 Months Ended 12 Months Ended 19 Months Ended
Jan. 18, 2024
Jan. 02, 2024
Jan. 01, 2024
Jul. 13, 2023
Jul. 01, 2023
Jan. 01, 2023
Dec. 05, 2022
Dec. 01, 2022
Jul. 04, 2022
Jun. 13, 2022
Dec. 31, 2023
Nov. 30, 2023
Jun. 01, 2023
Nov. 30, 2022
Nov. 30, 2021
Dec. 31, 2023
Statement Line Items [Line Items]                                
Recovery on receipt of mineral property option                       $ 2,696   $ 1,379    
Weighted average share price (in CAD per share)                       $ 1.22   $ 2.25    
Increase (decrease) through equity investments designated at fair value through other comprehensive income                       $ 4,599   $ 8,689    
Impairment of exploration and evaluation assets                       $ 1,809   $ 0    
Brokered private placement [member] | NevGold [member] | Potential ordinary share transactions [member]                                
Statement Line Items [Line Items]                                
Purchase of equity, purchase price               $ 1,250                
Brokered private placement [member] | NevGold [member] | Top of range [member]                                
Statement Line Items [Line Items]                                
Purchase of equity, purchase price                 $ 1,250              
Purchase of equity, percentage of gross proceeds                 40.00%              
NevGold Corp [member]                                
Statement Line Items [Line Items]                                
Increase (decrease) in equity investment designated at fair value through other comprehensive income, number of shares (in shares)                   1,481,481       16,670,250 5,925,925  
Weighted average share price (in CAD per share)                   $ 0.675            
Increase (decrease) through equity investments designated at fair value through other comprehensive income                   $ 1,000       $ 3,489    
Purchase of equity, purchase price               $ 1,250                
Purchase of equity, number of shares received (in shares)       4,109,589   3,658,536 2,976,200         10,744,325        
Purchase of equity, shares received amount       $ 1,562   $ 1,134                    
NevGold Corp [member] | Potential ordinary share transactions [member]                                
Statement Line Items [Line Items]                                
Weighted average share price (in CAD per share) $ 0.3                              
Purchase of equity, number of shares received (in shares) 10,000,000                              
Almaden gold project [member]                                
Statement Line Items [Line Items]                                
Proportion of ownership interest in project                   100.00%            
Almaden gold project [member] | NevGold Corp [member]                                
Statement Line Items [Line Items]                                
Number of common shares receipt (in shares)                   4,444,444            
Common shares receipt, fair value                 $ 2,489              
Share price (in CAD per share)                   $ 0.56            
Mineral property option, carry amount                       $ 1,110        
Recovery on receipt of mineral property option                   $ 1,379   2,696        
Option Agreement, additional payments   $ 6,000 $ 3,000   $ 1,500 $ 1,500                    
Aggregating of project qualifying expenditure                     $ 750   $ 1,500     $ 2,250
Maximum success-based Contingent Payments requirement                   7,500            
Contingent payments requirement, completion of a positive Preliminary Economic Assessment                   500            
Contingent payments requirement, completion of a positive Preliminary Feasibility Study                   2,500            
Contingent payments requirement, completion of a positive Feasibility Study                   $ 4,500            
Surubim gold project [member]                                
Statement Line Items [Line Items]                                
Impairment of exploration and evaluation assets                       $ 1,809