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Goodwill and Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2025 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 170,287
Divestiture of Family Office Services business	(1,711)
Measurement period adjustments	(1,109)
Foreign currency translation adjustments	963
Goodwill, ending balance	168,430
Investment Managers
Goodwill [Roll Forward]
Goodwill, beginning balance	55,267
Divestiture of Family Office Services business	0
Measurement period adjustments	0
Foreign currency translation adjustments	(15)
Goodwill, ending balance	55,252
Investment Advisors
Goodwill [Roll Forward]
Goodwill, beginning balance	33,131
Divestiture of Family Office Services business	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
Divestiture of Family Office Services business	0
Measurement period adjustments	0
Foreign currency translation adjustments	978
Goodwill, ending balance	62,697
Investments In New Businesses
Goodwill [Roll Forward]
Goodwill, beginning balance	20,170
Divestiture of Family Office Services business	(1,711)
Measurement period adjustments	0
Foreign currency translation adjustments	0
Goodwill, ending balance	$ 18,459

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