Segment Operating Results - Segment Contribution Footnotes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Other Revenue, net	$ 7,132	$ 28,505
Investment Banking & Equities
Segment Reporting Information [Line Items]
Other Revenue, net	7,818	28,117
Interest expense on Notes Payable and Line of Credit	4,193	4,188
Investment Management
Segment Reporting Information [Line Items]
Other Revenue, net	$ (686)	$ 388