Condensed Consolidated Statements of Changes in Equity - 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 [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of Accounting Change(1)	[1]					$ 2,229	$ (2,229)
Beginning Balance at Dec. 31, 2017		$ 796,368		$ 621	$ 1,600,699	(31,411)	79,461	$ (1,105,406)	$ 252,404
Beginning Balance, Shares at Dec. 31, 2017				62,119,904				(23,017,750)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		109,736					95,543		14,193
Other Comprehensive Income		3,654				3,133			521
Treasury Stock Purchases		(139,236)						$ (139,236)
Treasury Stock Purchases, Shares								(1,421,649)
Evercore LP Units Converted into Class A Common Stock		13,588		$ 9	47,915				(34,336)
Evercore LP Units Converted into Class A Common Stock				860,115
Equity-based Compensation Awards		48,051		$ 24	42,905				5,122
Equity-based Compensation Awards, Shares				2,411,100
Dividends		(19,170)					(19,170)
Noncontrolling Interest (Note 14)		(38,658)			(25,227)				(13,431)
Ending Balance at Mar. 31, 2018		774,333		$ 654	1,666,292	(26,049)	153,605	$ (1,244,642)	224,473
Ending Balance, Shares at Mar. 31, 2018				65,391,119				(24,439,399)
Beginning Balance at Dec. 31, 2018		1,007,939		$ 659	1,818,100	(30,434)	364,882	$ (1,395,087)	249,819
Beginning Balance, Shares at Dec. 31, 2018			39,748,576	65,872,014				(26,123,438)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		78,200					67,232		10,968
Other Comprehensive Income		2,252				1,927			325
Treasury Stock Purchases		$ (107,693)						$ (107,693)
Treasury Stock Purchases, Shares		(1,249,000)						(1,249,510)
Evercore LP Units Converted into Class A Common Stock		$ 5,871		$ 2	16,292				(10,423)
Evercore LP Units Converted into Class A Common Stock				237,367
Equity-based Compensation Awards		61,206		$ 23	55,677				5,506
Equity-based Compensation Awards, Shares				2,331,952
Dividends		(23,833)					(23,833)
Noncontrolling Interest (Note 14)		(17,984)							(17,984)
Ending Balance at Mar. 31, 2019		$ 1,005,958		$ 684	$ 1,890,069	$ (28,507)	$ 408,281	$ (1,502,780)	$ 238,211
Ending Balance, Shares at Mar. 31, 2019			41,068,385	68,441,333				(27,372,948)

[1] The cumulative adjustment relates to the adoption of ASU No. 2016-01, "Recognition and Measurement of Financial Assets and Financial Liabilities" on January 1, 2018, for which the Company recorded an adjustment to Retained Earnings to reflect cumulative unrealized losses, net of tax, on available-for-sale equity securities previously recorded in Accumulated Other Comprehensive Income (Loss).