Related Party Transactions - Schedule of Amounts Recognized From Related Party Affiliates (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Related Party Transaction [Line Items]
Revenues	$ 17,893	$ 13,059	$ 55,810	$ 37,565
Expenses	14,944	13,981	47,489	38,206
Affiliated Entity
Related Party Transaction [Line Items]
Revenues	13,725	10,199	43,275	27,015
Expenses	850	645	2,677	1,812
Affiliated Entity \| Proprietary Funds
Related Party Transaction [Line Items]
Revenues	13,720	10,194	43,258	26,997
Affiliated Entity \| FRMO Corporation
Related Party Transaction [Line Items]
Revenues	2	2	8	9
Expenses	849	642	2,671	1,802
Affiliated Entity \| Consensus Mining & Seigniorage Corp
Related Party Transaction [Line Items]
Revenues	3	3	9	9
Affiliated Entity \| HM Tech
Related Party Transaction [Line Items]
Expenses	$ 1	$ 3	$ 6	$ 10

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

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details