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Calculations of Basic and Diluted Net Income Per Share Attributable to Evercore Partners Inc. Common Shareholders (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Earnings Per Share, Basic and Diluted [Line Items] |  |  |  |  |  |  |  |
Net income from continuing operations attributable to Evercore Partners Inc. common shareholders | $ 14,996 |  | $ 5,280 |  | $ 37,890 |  | $ 9,804 |
Net income (loss) from discontinued operations attributable to Evercore Partners Inc. common shareholders | (1,055) |  | 0 |  | (1,596) |  | 0 |
Net income attributable to Evercore Partners Inc. common shareholders | 13,941 |  | 5,280 |  | 36,294 |  | 9,804 |
Weighted average shares of Class A common stock outstanding, including vested restricted stock units (RSUs) (in shares) | 32,049 |  | 28,841 |  | 31,908 |  | 29,063 |
Basic net income per share from continuing operations attributable to Evercore Partners Inc. common shareholders (in dollars per share) | $ 0.47 |  | $ 0.18 |  | $ 1.19 |  | $ 0.34 |
Basic net income (loss) per share from discontinued operations attributable to Evercore Partners Inc. common shareholders (in dollars per share) | $ (0.04) |  | $ 0.00 |  | $ (0.05) |  | $ 0.00 |
Basic net income per share attributable to Evercore Partners Inc. common shareholders (in dollars per share) | $ 0.43 |  | $ 0.18 |  | $ 1.14 |  | $ 0.34 |
Diluted weighted average shares of Class A common stock outstanding (in shares) | 38,409 |  | 31,440 |  | 37,880 |  | 31,973 |
Diluted net income per share from continuing operations attributable to Evercore Partners Inc. common shareholders (in dollars per share) | $ 0.39 |  | $ 0.17 |  | $ 1.00 |  | $ 0.31 |
Diluted net income (loss) per share from discontinued operations attributable to Evercore Partners Inc. common shareholders (in dollars per share) | $ (0.03) |  | $ 0.00 |  | $ (0.04) |  | $ 0.00 |
Diluted net income per share attributable to Evercore Partners Inc. common shareholders (in dollars per share) | $ 0.36 |  | $ 0.17 |  | $ 0.96 |  | $ 0.31 |
Class A [Member] |  |  |  |  |  |  |  |
Earnings Per Share, Basic and Diluted [Line Items] |  |  |  |  |  |  |  |
Net income from continuing operations attributable to Evercore Partners Inc. | 15,017 |  | 5,301 |  | 37,953 |  | 9,867 |
Associated accretion of redemption price of noncontrolling interest in Trilantic (See Note 12) | (21) |  | (21) |  | (63) |  | (63) |
Net income from continuing operations attributable to Evercore Partners Inc. common shareholders | 14,996 |  | 5,280 |  | 37,890 |  | 9,804 |
Net income (loss) from discontinued operations attributable to Evercore Partners Inc. common shareholders | (1,055) |  | 0 |  | (1,596) |  | 0 |
Net income attributable to Evercore Partners Inc. common shareholders | 13,941 |  | 5,280 |  | 36,294 |  | 9,804 |
Weighted average shares of Class A common stock outstanding, including vested restricted stock units (RSUs) (in shares) | 32,049 |  | 28,841 |  | 31,908 |  | 29,063 |
Basic net income per share from continuing operations attributable to Evercore Partners Inc. common shareholders (in dollars per share) | $ 0.47 |  | $ 0.18 |  | $ 1.19 |  | $ 0.34 |
Basic net income (loss) per share from discontinued operations attributable to Evercore Partners Inc. common shareholders (in dollars per share) | $ (0.04) |  | $ 0.00 |  | $ (0.05) |  | $ 0.00 |
Basic net income per share attributable to Evercore Partners Inc. common shareholders (in dollars per share) | $ 0.43 |  | $ 0.18 |  | $ 1.14 |  | $ 0.34 |
Noncontrolling interest related to the assumed exchange of LP Units for Class A common shares |  | [1] |  | [1] |  | [1] |  | [1]
Associated corporate taxes related to the assumed elimination of Noncontrolling Interest described above |  | [1] |  | [1] |  | [1] |  | [1]
Diluted net income from continuing operations attributable to Class A common shareholders | 14,996 |  | 5,280 |  | 37,890 |  | 9,804 |
Diluted net income attributable to Class A common shareholders | 13,941 |  | 5,280 |  | 36,294 |  | 9,804 |
Assumed exchange of LP Units for Class A common shares |  | [1] |  | [1] |  | [1] |  | [1]
Additional shares of the Company's common stock assumed to be issued pursuant to non-vested RSUs and deferred consideration, as calculated using the Treasury Stock Method (in shares) | 3,514 |  | 2,033 |  | 3,457 |  | 2,099 |
Assumed conversion of Warrants issued (in shares) | 2,846 |  | 566 |  | 2,515 |  | 811 |
Diluted weighted average shares of Class A common stock outstanding (in shares) | 38,409 |  | 31,440 |  | 37,880 |  | 31,973 |
Diluted net income per share from continuing operations attributable to Evercore Partners Inc. common shareholders (in dollars per share) | $ 0.39 |  | $ 0.17 |  | $ 1.00 |  | $ 0.31 |
Diluted net income (loss) per share from discontinued operations attributable to Evercore Partners Inc. common shareholders (in dollars per share) | $ (0.03) |  | $ 0.00 |  | $ (0.04) |  | $ 0.00 |
Diluted net income per share attributable to Evercore Partners Inc. common shareholders (in dollars per share) | $ 0.36 |  | $ 0.17 |  | $ 0.96 |  | $ 0.31 |
[1] | During the three and nine months ended September 30, 2013 and 2012, the LP Units (which represent the right to receive Class A Shares upon exchange) were antidilutive and consequently the effect of their exchange into Class A Shares has been excluded from the calculation of diluted net income (loss) per share attributable to Evercore Partners Inc. common shareholders. The units that would have been included in the computation of diluted net income (loss) per share attributable to Evercore Partners Inc. common shareholders if the effect would have been dilutive were 6,592 and 6,690 for the three and nine months ended September 30, 2013, respectively, and 8,905 and 8,993 for the three and nine months ended September 30, 2012, respectively.

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