Segment Operating Results - Segment Contribution Footnotes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Other Revenue, net	$ 28,505	$ 22,675
Investment Banking and Equities [Member]
Segment Reporting Information [Line Items]
Other Revenue, net	28,117	21,301
Interest expense on Notes Payable and Line of Credit	4,188	4,171
Investment Management [Member]
Segment Reporting Information [Line Items]
Other Revenue, net	$ 388	$ 1,374