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Segment Information - Reported Revenue and Profit Before Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Revenue |  |  |  |  |  |  |  |
Total revenue | $ 249,689 |  | $ 243,830 |  | $ 504,857 |  | $ 482,976 |
Income (loss) before income taxes |  |  |  |  |  |  |  |
Total income (loss) before income taxes | 136 |  | 5,674 |  | 5,245 |  | 12,387 |
Private Client Division [Member] |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |
Total revenue | 145,344 | [1] | 143,278 | [1] | 293,164 | [1] | 286,647 | [1]
Income (loss) before income taxes |  |  |  |  |  |  |  |
Total income (loss) before income taxes | 7,560 | [1] | 15,698 | [1] | 17,868 | [1] | 33,025 | [1]
Asset management fees | 77.50% |  | 77.50% |  | 77.50% |  | 77.50% |
Asset Management [Member] |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |
Total revenue | 25,032 | [1] | 22,006 | [1] | 49,642 | [1] | 42,962 | [1]
Income (loss) before income taxes |  |  |  |  |  |  |  |
Total income (loss) before income taxes | 8,353 | [1] | 7,402 | [1] | 16,036 | [1] | 13,945 | [1]
Asset management fees | 22.50% |  | 22.50% |  | 22.50% |  | 22.50% |
Capital Markets [Member] |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |
Total revenue | 72,217 |  | 67,904 |  | 150,098 |  | 133,035 |
Income (loss) before income taxes |  |  |  |  |  |  |  |
Total income (loss) before income taxes | 7,082 |  | 972 |  | 18,266 |  | 4,505 |
Commercial Mortgage Banking [Member] |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |
Total revenue | 6,958 |  | 9,477 |  | 11,830 |  | 17,543 |
Income (loss) before income taxes |  |  |  |  |  |  |  |
Total income (loss) before income taxes | 3,605 |  | 2,276 |  | 5,454 |  | 5,154 |
Corporate and Other [Member] |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |
Total revenue | 138 |  | 1,165 |  | 123 |  | 2,789 |
Income (loss) before income taxes |  |  |  |  |  |  |  |
Total income (loss) before income taxes | $ (26,464) |  | $ (20,674) |  | $ (52,379) |  | $ (44,242) |
[1] | Asset management fees are allocated 22.5% to the Asset Management and 77.5% to the Private Client Divisions.

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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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