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Employee Stock Compensation Plans (Details Narrative) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Jun. 20, 2023 | Jun. 18, 2013
Unrecognized stock option compensation cost related to non-vested options | $ 387,000 |  |  |
Unrecognized stock option compensation cost related to non-vested options, period of recognition | 20 years |  |  |
Average remaining contractual life of Solitario's outstanding options | 2 years 10 months 24 days |  |  |
Average remaining contractual life of Solitario's vested options | 2 years 4 months 24 days |  |  |
Stock options granted | 50,000 | 2,360,000 |  |
2013 Plan |  |  |  |
Common stock, capital shares reserved for future issuance |  |  | 5,000,000 | 5,750,000
2013 Plan | Stock Option |  |  |  |
Award vesting rights on grant date, percentage | 25.00% |  |  |
Award vesting rights, percentage | 25.00% |  |  |
Stock option exercised in period, shares | 1,486,500 | 114,250 |  |
Proceeds from stock options exercised | $ 459,315 | $ 30,000 |  |
Aggregate intrinsic value per share | $ 0.56 | $ 0.62 |  |
Employee stock option expense | $ 247,000 | $ 338,000 |  |
2023 Plan |  |  |  |
Stock options granted | 50,000 |  |  |

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