Summary of Significant Accounting Policies - Schedule of Company's Other Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Schedule of Investments [Line Items]
Other Investments	$ 21,776	$ 13,443
Horizon Kinetics Hard Asset, LLC
Schedule of Investments [Line Items]
Other Investments	17,487	11,299
Consensus Mining & Seigniorage Corporation
Schedule of Investments [Line Items]
Other Investments	838	737
Other Miscellaneous Investments
Schedule of Investments [Line Items]
Other Investments	$ 3,451	$ 1,407

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details