Condensed Consolidated Statements of Changes in Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total USD ($)	Additional Paid-In Capital [Member] USD ($)	Accumulated Other Comprehensive Income (Loss) [Member] USD ($)	Retained Earnings (Deficit) [Member] USD ($)	Treasury Stock [Member] USD ($)	Noncontrolling Interest [Member] USD ($)	Common Class A [Member]	Common Class A [Member] Common Stock [Member] USD ($)
Beginning Balance, Value at Dec. 31, 2011	$ 465,826	$ 575,122	$ (12,058)	$ (76,703)	$ (79,007)	$ 58,162		$ 310
Beginning Balance, Shares at Dec. 31, 2011					(3,072,958)			(31,014,265)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	14,494			9,867		4,627
Other Comprehensive Income (Loss)	3,487		2,454			1,033
Treasury Stock Purchases, Value	(65,018)				(65,018)
Treasury Stock Purchases, Shares					(2,553,462)
Evercore LP Units Purchased or Converted into Class A Common Stock, Value	2,468	9,715				(7,264)		17
Evercore LP Units Purchased or Converted into Class A Common Stock, Shares								1,677,513
Equity-based Compensation Awards, Value	74,312	58,275				16,019		18
Equity-based Compensation Awards, Shares								1,756,355
Shares Issued as Consideration for Acquisitions and Investments, Value	5,565	(76)			5,641
Shares Issued as Consideration for Acquisitions and Investments, Shares					219,948
Dividends and Equivalents	(17,703)	3,598		(21,301)
Noncontrolling Interest (Note 12)	(13,398)	(1,080)				(12,318)
Ending Balance, Value at Sep. 30, 2012	470,033	645,554	(9,604)	(88,137)	(138,384)	60,259		345
Ending Balance, Shares at Sep. 30, 2012					(5,406,472)			(34,448,133)
Beginning Balance, Value at Dec. 31, 2012	490,749	654,275	(9,086)	(77,079)	(139,954)	62,243		350
Beginning Balance, Shares at Dec. 31, 2012					(5,463,515)		(29,576,986)	(35,040,501)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	48,643			36,357		12,286
Other Comprehensive Income (Loss)	(1,374)		(1,112)			(262)
Treasury Stock Purchases, Value	(85,073)				(85,073)
Treasury Stock Purchases, Shares					(2,230,613)
Evercore LP Units Purchased or Converted into Class A Common Stock, Value	(2,618)	11,928				(14,562)		16
Evercore LP Units Purchased or Converted into Class A Common Stock, Shares								1,615,569
Equity-based Compensation Awards, Value	92,671	77,034			65	15,545		27
Equity-based Compensation Awards, Shares					2,600			2,713,500
Shares Issued as Consideration for Acquisitions and Investments, Value	1,494	365			1,129
Shares Issued as Consideration for Acquisitions and Investments, Shares					39,341
Dividends and Equivalents	(21,214)	4,409		(25,623)
Noncontrolling Interest (Note 12)	(19,730)	(3,548)				(16,182)
Ending Balance, Value at Sep. 30, 2013	$ 503,548	$ 744,463	$ (10,198)	$ (66,345)	$ (223,833)	$ 59,068		$ 393
Ending Balance, Shares at Sep. 30, 2013					(7,652,187)		(31,717,383)	(39,369,570)