Segment Operating Results - Segment Contribution Footnotes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Other Revenue, net	$ 17,595	$ 20,040	$ 46,100	$ 42,715
Investment Banking and Equities [Member]
Segment Reporting Information [Line Items]
Other Revenue, net	17,581	19,442	45,698	40,743
Interest expense on Notes Payable and Line of Credit	4,189	4,181	8,377	8,352
Investment Management [Member]
Segment Reporting Information [Line Items]
Other Revenue, net	$ 14	$ 598	$ 402	$ 1,972