Goodwill and Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 170,287
Reclassification of goodwill to assets held for sale	(1,711)
Measurement period adjustments	(1,109)
Foreign currency translation adjustments	432
Goodwill, ending balance	167,899
Investment Managers
Goodwill [Roll Forward]
Goodwill, beginning balance	55,267
Reclassification of goodwill to assets held for sale	0
Measurement period adjustments	0
Foreign currency translation adjustments	1
Goodwill, ending balance	55,268
Investment Advisors
Goodwill [Roll Forward]
Goodwill, beginning balance	33,131
Reclassification of goodwill to assets held for sale	0
Measurement period adjustments	(1,109)
Foreign currency translation adjustments	0
Goodwill, ending balance	32,022
Institutional Investors
Goodwill [Roll Forward]
Goodwill, beginning balance	61,719
Reclassification of goodwill to assets held for sale	0
Measurement period adjustments	0
Foreign currency translation adjustments	431
Goodwill, ending balance	62,150
Investments In New Businesses
Goodwill [Roll Forward]
Goodwill, beginning balance	20,170
Reclassification of goodwill to assets held for sale	(1,711)
Measurement period adjustments	0
Foreign currency translation adjustments	0
Goodwill, ending balance	$ 18,459