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Segment Information - Reported Revenue and Profit Before Income Taxes (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenue
Total revenue		$ 230,360	$ 213,536	$ 238,928	$ 245,561	$ 254,928	$ 244,679	$ 249,689	$ 255,168	$ 928,385	$ 1,004,464	$ 1,019,714
Income (loss) before income tax provision (benefit)
Total income (loss) before income taxes		$ (4,243)	$ (1,527)	$ 2,630	$ 9,851	$ 9,595	$ 10,896	$ 136	$ 5,109	$ 6,711	$ 25,736	$ 43,909
Private Client Division
Income (loss) before income tax provision (benefit)
Asset management fees										77.50%	77.50%	77.50%
Asset Management
Income (loss) before income tax provision (benefit)
Asset management fees										22.50%	22.50%	22.50%
Operating Segments | Private Client Division
Revenue
Total revenue	[1]									$ 521,526	$ 582,364	$ 600,071
Income (loss) before income tax provision (benefit)
Total income (loss) before income taxes	[1]									59,016	60,116	65,924
Operating Segments | Asset Management
Revenue
Total revenue	[1]									97,121	99,964	102,214
Income (loss) before income tax provision (benefit)
Total income (loss) before income taxes	[1]									33,133	33,707	40,951
Operating Segments | Capital markets
Revenue
Total revenue										279,589	298,597	281,377
Income (loss) before income tax provision (benefit)
Total income (loss) before income taxes										5,167	17,819	6,968
Operating Segments | Commercial mortgage banking
Revenue
Total revenue										30,584	23,329	34,144
Income (loss) before income tax provision (benefit)
Total income (loss) before income taxes										9,139	8,546	11,413
Operating Segments | Corporate/Other
Revenue
Total revenue										(435)	210	1,908
Income (loss) before income tax provision (benefit)
Total income (loss) before income taxes										$ (99,744)	$ (94,452)	$ (81,347)
[1] Asset management fees are allocated 22.5% to the Asset Management and 77.5% to the Private Client segments.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=51673353&loc=d3e41242-110953

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 10
-Article 5

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
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