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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Current assets:    
Cash and cash equivalents $ 372 $ 81
Short-term investments 7,573 4,523
Investments in marketable equity securities, at fair value 357 1,322
Prepaid expenses and other 68 66
Total current assets 8,370 5,992
Mineral properties 16,706 16,701
Restricted cash - mineral property reclamation bonds 230 230
Other assets 66 117
Total assets 25,372 23,040
Current liabilities:    
Accounts payable 467 258
Kinross call option liability 0 67
Operating lease liability 18 43
Total current liabilities 485 368
Long-term liabilities:    
Asset retirement obligation and reclamation liabilities 145 145
Operating lease liability - long-term 0 7
Total long-term liabilities 145 152
Shareholders' equity:    
Preferred stock, $0.01 par value, authorized 10,000,000 shares (none issued and outstanding at September 30, 2025 and December 31, 2024) 0 0
Common stock, $0.01 par value, authorized 200,000,000 shares (90,612,981 and 81,638,418 shares, respectively, issued and outstanding at September 30, 2025 and December 31, 2024) 906 816
Additional paid-in capital 90,170 84,714
Accumulated deficit (66,334) (63,010)
Total shareholders' equity 24,742 22,520
Total liabilities and shareholders' equity $ 25,372 $ 23,040