Net Income (Loss) Per Share Attributable to Evercore Partners Inc. Common Shareholders Calculations of Basic and Diluted Net Income Per Share Attributable to Evercore Partners Inc. Common Shareholders (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Adjustment To Diluted Net Income Attributable To Class A Common Shareholders If LP Units Were Dilutive	$ 3,200	$ 3,035	$ 7,987	$ 7,880
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 (in shares)	4,670	6,592	4,823	6,690