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"), And Pointwise Partners Limited ("PW") - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Total revenue	$ 49,453	$ 57,194	$ 105,160	$ 119,194
Net income (loss)	$ (8,959)	$ 28,160	$ 12,319	$ (62,747)