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Goodwill and Intangible Assets (Schedule of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Beginning balance	$ 117,232	$ 64,489
Foreign currency translation adjustments	(45)	7
Measurement period adjustments	(1,588)
Ending balance	115,599	117,232
Acquisition of Finomial
Goodwill [Roll Forward]
Business acquisition		3,825
Acquisition of Novus
Goodwill [Roll Forward]
Business acquisition		48,911
Institutional Investors
Goodwill [Roll Forward]
Beginning balance	48,911	0
Foreign currency translation adjustments	0	0
Measurement period adjustments	(1,803)
Ending balance	47,108	48,911
Institutional Investors | Acquisition of Finomial
Goodwill [Roll Forward]
Business acquisition		0
Institutional Investors | Acquisition of Novus
Goodwill [Roll Forward]
Business acquisition		48,911
Investment Managers
Goodwill [Roll Forward]
Beginning balance	56,822	52,990
Foreign currency translation adjustments	(45)	7
Measurement period adjustments	215
Ending balance	56,992	56,822
Investment Managers | Acquisition of Finomial
Goodwill [Roll Forward]
Business acquisition		3,825
Investment Managers | Acquisition of Novus
Goodwill [Roll Forward]
Business acquisition		0
Investments in New Businesses
Goodwill [Roll Forward]
Beginning balance	11,499	11,499
Foreign currency translation adjustments	0	0
Measurement period adjustments	0
Ending balance	$ 11,499	11,499
Investments in New Businesses | Acquisition of Finomial
Goodwill [Roll Forward]
Business acquisition		0
Investments in New Businesses | Acquisition of Novus
Goodwill [Roll Forward]
Business acquisition		$ 0

X

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