Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	Total	Class A [Member]	Common Stock [Member] Class A [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings (Deficit) [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2015	$ 707,216		$ 552	$ 1,210,742	$ (34,539)	$ (27,791)	$ (644,412)	$ 202,664
Beginning Balance, Shares at Dec. 31, 2015			55,249,559				(15,626,288)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	88,554					64,100		24,454
Other Comprehensive Income (Loss)	(13,309)				(10,612)			(2,697)
Treasury Stock Purchases, net	(161,778)						$ (161,778)
Treasury Stock Purchases, net, Shares							(3,386,869)
Evercore LP Units Purchased or Converted into Class A Common Stock	0		$ 3	9,161				(9,164)
Evercore LP Units Purchased or Converted into Class A Common Stock, Shares			326,280
Equity-based Compensation Awards	154,320		$ 24	87,939				66,357
Equity-based Compensation Awards, Shares			2,337,432
Dividends	(37,693)			5,781		(43,474)
Noncontrolling Interest (Note 12)	(37,339)			(1,257)				(36,082)
Ending Balance at Sep. 30, 2016	699,971		$ 579	1,312,366	(45,151)	(7,165)	$ (806,190)	245,532
Ending Balance, Shares at Sep. 30, 2016			57,913,271				(19,013,157)
Beginning Balance at Dec. 31, 2016	783,331		$ 582	1,368,122	(50,096)	20,343	$ (811,653)	256,033
Beginning Balance, Shares at Dec. 31, 2016		39,190,856	58,292,567				(19,101,711)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	180,606					144,866		35,740
Other Comprehensive Income (Loss)	6,394				5,130			1,264
Treasury Stock Purchases, net	$ (291,689)						$ (291,689)
Treasury Stock Purchases, net, Shares	(3,889,000)						(3,889,379)
Evercore LP Units Purchased or Converted into Class A Common Stock	$ (1,611)		$ 8	27,774				(29,393)
Evercore LP Units Purchased or Converted into Class A Common Stock, Shares			737,739
Equity-based Compensation Awards	124,302		$ 26	116,982				7,294
Equity-based Compensation Awards, Shares			2,555,332
Dividends	(47,776)			0		(47,776)
Noncontrolling Interest (Note 12)	(25,572)			(7,054)				(18,518)
Ending Balance at Sep. 30, 2017	$ 727,985		$ 616	$ 1,505,824	$ (44,966)	$ 117,433	$ (1,103,342)	$ 252,420
Ending Balance, Shares at Sep. 30, 2017		38,594,548	61,585,638				(22,991,090)