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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