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Employee Stock Compensation Plans (Details Narrative) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 20, 2023
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Jun. 18, 2013
Stock-based compensation expense   $ 125,000 $ 356,000 $ 251,000 $ 415,000    
Unrecognized stock option compensation cost related to non-vested options   $ 589,000   $ 589,000      
2023 Plan [Member]              
Options granted       2,125,000      
Expected life years       5 years      
Expected volatility       71.50%      
Options vesting description       vest 25% on the date of grant and 25% on each anniversary date for the next three years      
Risk free interest rate       4.30%      
Grant date fair value       $ 1,120,000      
Option exercise price       $ 0.85      
Common stock, capital shares reserved for future issuance 5,000,000            
Options, vested and exercisable   2,175,000 2,175,000 2,175,000 2,175,000    
Vested and exercisable shares to acquire shares of common stock   1,087,500 556,250 1,087,500 556,250    
Options, vested and exercisable exercise price, Minimum   $ 0.51   $ 0.51      
Intrinsic value   $ 7,000   $ 7,000      
Options, vested and exercisable exercise price, Maximum   $ 0.85   $ 0.85      
Average remaining contractual life of Solitario's outstanding options 10 years     3 years 11 months 1 day      
2013 Plan [Member]              
Common stock, capital shares reserved for future issuance             5,750,000
Options exercise price, Maximum   0.28 $ 0.28 $ 0.28 $ 0.28    
Options exercise price, Minimum   $ 0.20 $ 0.20 $ 0.20 $ 0.20    
2013 Plan [Member] | Stock Option [Member]              
Options granted   250,000   1,028,500 50,000    
Stock option exercised in period, shares       2,145,000   3,173,500  
Options, vested and exercisable   1,643,750 2,672,250 1,643,750 2,672,250    
Options, vested and exercisable price per share amount   $ 0.20 $ 0.67 $ 0.20 $ 0.67    
Intrinsic value   $ 100,000   $ 100,000      
Proceeds from stock options exercised   50,000   206,000 $ 14,000    
Aggregate intrinsic value   $ 104,000   $ 437,000 $ 12,000    
Average remaining contractual life of Solitario's outstanding options       2 years 1 month 6 days