Segment Information - Reported Revenue and Profit Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue
Total revenue	$ (234,770)	$ (251,770)
Income (loss) before income taxes
Operating Income (Loss)	10,223	16,052
Private Client Division
Revenue
Total revenue	(141,418)	(163,527)
Income (loss) before income taxes
Income before income taxes	$ 33,369	42,834
Asset management fees	90.00%
Asset Management
Revenue
Total revenue	$ (19,276)	(16,586)
Income (loss) before income taxes
Income before income taxes	$ 4,305	2,242
Asset management fees	10.00%
Capital markets
Revenue
Total revenue	$ (75,542)	(70,961)
Income (loss) before income taxes
Income before income taxes	(143)	(2,647)
Corporate/Other
Revenue
Total revenue	1,466	(696)
Income (loss) before income taxes
Income before income taxes	$ (27,308)	$ (26,377)