Segment Information - Reported Revenue and Profit Before Income Taxes (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Revenue
Revenue		$ 218,694	$ 245,561
Income (loss) before income tax provision (benefit)
Total income (loss) before income taxes		(7,997)	9,851
Private Client Division [Member]
Revenue
Revenue	[1]	127,544	139,932
Income (loss) before income tax provision (benefit)
Total income (loss) before income taxes	[1]	$ 16,317	$ 16,757
Asset management fees		77.50%	77.50%
Asset Management [Member]
Revenue
Revenue	[1]	$ 22,974	$ 24,461
Income (loss) before income tax provision (benefit)
Total income (loss) before income taxes	[1]	$ 6,768	$ 7,886
Asset management fees		22.50%	22.50%
Capital Markets [Member]
Revenue
Revenue		$ 61,065	$ 72,166
Income (loss) before income tax provision (benefit)
Total income (loss) before income taxes		(6,798)	6,735
Commercial Mortgage Banking [Member]
Revenue
Revenue		3,738	8,386
Income (loss) before income tax provision (benefit)
Total income (loss) before income taxes		(657)	4,037
Corporate and Other [Member]
Revenue
Revenue		3,373	616
Income (loss) before income tax provision (benefit)
Total income (loss) before income taxes		$ (23,627)	$ (25,564)

[1] Asset management fees are allocated 22.5% to the Asset Management and 77.5% to the Private Client segments.