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Segment Information - Reported Revenue and Profit Before Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013
Revenue |  |
Total revenue | $ 255,168 | $ 239,146
Income (loss) before income taxes |  |
Total income (loss) before income taxes | 5,109 | 6,713
Private Client Division [Member] |  |
Revenue |  |
Total revenue | 147,820 | 143,369
Income (loss) before income taxes |  |
Total income (loss) before income taxes | 10,308 | 17,327
Asset management fees | 77.50% | 77.50%
Asset Management [Member] |  |
Revenue |  |
Total revenue | 24,610 | 20,956
Income (loss) before income taxes |  |
Total income (loss) before income taxes | 7,683 | 6,543
Asset management fees | 22.50% | 22.50%
Capital Markets [Member] |  |
Revenue |  |
Total revenue | 77,881 | 65,131
Income (loss) before income taxes |  |
Total income (loss) before income taxes | 11,184 | 3,533
Commercial Mortgage Banking [Member] |  |
Revenue |  |
Total revenue | 4,872 | 8,066
Income (loss) before income taxes |  |
Total income (loss) before income taxes | 1,849 | 2,878
Corporate and Other [Member] |  |
Revenue |  |
Total revenue | (15) | 1,624
Income (loss) before income taxes |  |
Total income (loss) before income taxes | $ (25,915) | $ (23,568)

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- Definition 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). + References 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) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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