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Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Assets
Marketable equity securities	$ 1,706	$ 1,322
Short-term investments	3,973	4,523
Kinross calls
Assets
Liabilities	273	67
Level 1
Assets
Marketable equity securities	1,706	1,322
Short-term investments	3,973	4,523
Level 1 | Kinross calls
Assets
Liabilities	273	67
Level 2
Assets
Marketable equity securities	0	0
Short-term investments	0	0
Level 2 | Kinross calls
Assets
Liabilities	0	0
Level 3
Assets
Marketable equity securities	0	0
Short-term investments	0	0
Level 3 | Kinross calls
Assets
Liabilities	$ 0	$ 0

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