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Revenues Derived from Clients and Private Equity Funds by Geographical Areas (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net revenue | $ 188,213 | [1] | $ 154,284 | [1] | $ 549,576 | [1] | $ 433,005 | [1]
United States [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net revenue | 131,499 |  | 114,018 |  | 379,950 |  | 315,085 |
Europe And Other [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net revenue | 37,465 |  | 30,860 |  | 112,331 |  | 90,491 |
Latin America [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net revenue | $ 19,249 |  | $ 9,406 |  | $ 57,295 |  | $ 27,429 |
[1] | Excludes Other Revenue and Interest Expense.

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- Details
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