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Marketable Equity Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Investments in marketable equity securities, at fair value	$ 1,051	$ 949
Kinross Gold Corp [Member]
Investments in marketable equity securities, at fair value	$ 477	$ 409
Shares	100,000	100,000
Vendetta Mining Corp. [Member]
Investments in marketable equity securities, at fair value	$ 234	$ 229
Shares	7,750,000	7,750,000
Vox Royalty Corp. [Member]
Investments in marketable equity securities, at fair value	$ 325	$ 311
Shares	134,055	134,055
Highland Silver Corp [Member]
Investments in marketable equity securities, at fair value	$ 15	$ 0
Shares	200,000	200,000

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