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Related Party Transactions (Details) - WisdomTree Products [Member] - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Related Party Transactions [Line Items] |  |  |  |  |
Investments | $ 175,853 |  | $ 175,853 |  | $ 89,822
Seed investments |  |  |  |  | 5,232
Unrealized gains | 946 | $ 554 |  |  |
Realized gains |  |  | 1,742 | $ 2,278 |
Affiliated Digital Funds [Member] |  |  |  |  |
Related Party Transactions [Line Items] |  |  |  |  |
Investments | $ 18,216 |  | $ 18,216 |  | $ 15,616

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