Segment Operating Results - (Footnotes) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Other Revenue, net	$ 22,675	$ (6,029)
Investment Banking and Equities [Member]
Segment Reporting Information [Line Items]
Other Revenue, net	21,301	(7,467)
Interest expense on Notes Payable and Line of Credit	4,171	4,250
Investment Management [Member]
Segment Reporting Information [Line Items]
Other Revenue, net	$ 1,374	$ 1,438