Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings (Deficit) [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Class A [Member]	Class A [Member] Common Stock [Member]
Beginning Balance, Value at Dec. 31, 2013	$ 563,158	$ 799,233	$ (10,784)	$ (59,896)	$ (226,380)	$ 60,577		$ 408
Beginning Balance, Shares at Dec. 31, 2013					(7,702,900)			(40,772,434)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	68,262			59,142		9,120
Other Comprehensive Income (Loss)	(3,400)		(2,709)			(691)
Treasury Stock Purchases	(135,137)				$ (135,137)
Treasury Stock Purchases, Shares					(2,550,357)
Evercore LP Units Purchased or Converted into Class A Common Stock	4,330	12,067				(7,748)		$ 11
Evercore LP Units Converted into Class A Common Stock, Shares								1,101,851
Equity-based Compensation Awards	110,026	109,780			$ 0	205		$ 41
Equity-based Compensation Awards, Shares								4,107,627
Shares Issued as Consideration for Acquisitions and Investments	10,742	2,987			$ 4,245	3,510
Stock Issued During Period, Shares, Acquisitions					131,243
Dividends and Equivalents	(27,911)	4,481		(32,392)
Noncontrolling Interest (Note 12)	13,350	(15,748)			$ 3,856	25,242
Stock Issued During Period, Shares, Other					119,207
Ending Balance, Value at Sep. 30, 2014	603,420	912,800	(13,493)	(33,146)	$ (353,416)	90,215		$ 460
Ending Balance, Shares at Sep. 30, 2014					(10,002,807.000)			(45,981,912.000)
Beginning Balance, Value at Dec. 31, 2014	712,233	950,147	(20,387)	(17,814)	$ (361,129)	160,952		$ 464
Beginning Balance, Shares at Dec. 31, 2014					(10,159,116)		(36,255,124)	(46,414,240)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	27,714			22,261		5,453
Other Comprehensive Income (Loss)	(10,050)		(7,783)			(2,267)
Treasury Stock Purchases	(151,665)				$ (151,665)
Treasury Stock Purchases, Shares					(2,965,632)
Evercore LP Units Purchased or Converted into Class A Common Stock	39	7,547				(7,512)		$ 4
Evercore LP Units Converted into Class A Common Stock, Shares								391,487
Equity-based Compensation Awards	155,967	90,668				65,272		$ 27
Equity-based Compensation Awards, Shares								2,720,588
Dividends and Equivalents	(33,987)	4,814		(38,801)
Noncontrolling Interest (Note 12)	(13,498)	1,379				(14,877)
Ending Balance, Value at Sep. 30, 2015	$ 686,753	$ 1,054,555	$ (28,170)	$ (34,354)	$ (512,794)	$ 207,021		$ 495
Ending Balance, Shares at Sep. 30, 2015					(13,124,748.000)		(36,401,567)	(49,526,315.000)