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Business Combinations and Divestitures - Pro Forma Financial Information (Details) - AlTi Wealth Management (Switzerland) SA (“AWMS”), AL Wealth Partners Pte. Ltd. (“ALWP”), East End Advisors, LLC ("EEA"), Pointwise Partners Limited ("PW"), And Envoi, LLC (“Envoi”) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] |  |  |
Total revenue | $ 215,339 | $ 276,959 | $ 102,598
Net income (loss) | $ (101,668) | $ (162,307) | $ (2,050)

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