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Note 17 - Commitments (Details Textual)
$ in Thousands
 1 Months Ended 6 Months Ended 12 Months Ended
Oct. 31, 2025
USD ($)
Jun. 30, 2025
CAD ($)
Jun. 30, 2025
BRL (R$)
Dec. 07, 2022
USD ($)
Dec. 14, 2012
USD ($)
Nov. 15, 2011
Dec. 31, 2023
CAD ($)
oz
Dec. 31, 2023
USD ($)
oz
Dec. 31, 2023
BRL (R$)
oz
Sep. 30, 2018
BRL (R$)
Jun. 30, 2024
CAD ($)
Jun. 30, 2024
BRL (R$)
Nov. 30, 2024
CAD ($)
Statement Line Items [Line Items]                          
Low-value assets                         $ 5
Short-term leases assets                         113
Non-lease components of operating leases                         $ 340
Surface rights lease payment agreement on October 15, 2025 [member]                          
Statement Line Items [Line Items]                          
Option Agreement, Final Payment $ 100,000                        
Boa Vista Gold Inc. [member]                          
Statement Line Items [Line Items]                          
Payments to counterparty | R$                   R$ 3,620,000      
Boa Vista Gold Inc. [member] | Mineral rights agreement [member]                          
Statement Line Items [Line Items]                          
Payments to counterparty   $ 52 R$ 210,000       $ 61   R$ 220,000   $ 820 R$ 3,000,000  
Final payment, extension, rate                     7.00% 7.00%  
Bonus payment               $ 1,500,000          
Bonus payment, mass (Ounce) | oz             3,000,000 3,000,000 3,000,000        
Altoro [member]                          
Statement Line Items [Line Items]                          
Option agreement, option payment         $ 850,000                
Altoro [member] | National Mining Agency [member]                          
Statement Line Items [Line Items]                          
Option agreement, option payment       $ 650,000                  
D'Gold [member]                          
Statement Line Items [Line Items]                          
Proportion of ownership interest in joint venture                         84.05%
Net smelter return royalty, percentage           1.50%              
D'Gold [member] | Additional payable if holdings drop below 10% [member]                          
Statement Line Items [Line Items]                          
Net smelter return royalty, percentage           1.50%