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Calculations of Basic and Diluted Net Income Per Share Attributable to Evercore Partners Inc. Common Shareholders (Parenthetical) (Detail) (LP Units [Member])
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
LP Units [Member]
       
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Antidilutive securities excluded from computation of earnings per share 6,592 8,905 6,690 8,993