Segment Operating Results - (Footnotes) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Other Revenue, net	$ (27,297)	$ 12,095	$ (33,326)	$ 14,755
Special Charges, Including Business Realignment Costs	532	0	532	0
Acquisition and Transition Costs	0	0	0	7
Total Other Expenses	532	0	532	7
Investment Banking [Member]
Segment Reporting Information [Line Items]
Other Revenue, net	(26,996)	11,233	(34,463)	13,817
Interest expense on Notes Payable and Line of Credit	4,258	4,306	8,508	8,876
Special Charges, Including Business Realignment Costs	532	0	532	0
Acquisition and Transition Costs	0	0	0	7
Total Other Expenses	532	0	532	7
Investment Management [Member]
Segment Reporting Information [Line Items]
Other Revenue, net	(301)	862	1,137	938
Total Other Expenses	$ 0	$ 0	$ 0	$ 0