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 - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
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	$ 12,912	$ 12,804	$ 8,135
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)	5,161	6,433	8,695