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Income Taxes (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Deferred tax assets:    
Loss carryovers $ 12,806 $ 12,403
Investment in mineral property 1,669 1,669
Capitalized exploration costs 1,771 841
Stock option compensation expense 292 129
Other 162 175
Unrealized loss on short-term investments 29 100
Lease liability 12 19
Valuation allowance (16,722) (15,301)
Total deferred tax assets 19 35
Deferred tax liabilities:    
Unrealized gains on marketable equity securities 0 1
Lease asset 11 21
Basis difference on fixed assets 8 13
Total deferred tax liabilities 19 35
Net deferred tax liabilities $ 0 $ 0