Noncontrolling Interest - Changes In Noncontrolling Interest (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance			$ 256,033
Comprehensive income (loss):
Net Income Attributable to Noncontrolling Interest	$ 14,171	$ 12,588	35,740	$ 24,454
Total comprehensive income	15,131	11,739	37,004	21,757
Ending balance	252,420		252,420
Noncontrolling Interest [Member]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance			256,033	202,664
Comprehensive income (loss):
Net Income Attributable to Noncontrolling Interest			35,740	24,454
Other comprehensive income (loss)			1,264	(2,697)
Total comprehensive income			37,004	21,757
Evercore LP Units Purchased or Converted into Class A Shares			(29,393)	(9,164)
Amortization and Vesting of LP Units/Interests			7,294	66,357
Distributions to Noncontrolling Interests			(26,315)	(25,519)
Issuance of Noncontrolling Interest			8,279	885
Purchase of Noncontrolling Interest			(261)	(5,225)
Deconsolidation of GCP III			0	(5,808)
Other, net			(221)	(415)
Total other items			(18,518)	(36,082)
Ending balance	$ 252,420	$ 245,532	$ 252,420	$ 245,532