Condensed Statements Of Cash Flows, Parent Company Only (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income (Loss)	$ 39,479	$ 10,531	$ 17,805
(Increase) Decrease in Operating Assets:
Other Assets	15,485	(144)	(1,138)
Increase (Decrease) in Operating Liabilities:
Taxes Payable	13,694	(1,777)	380
Other Liabilities	(1,951)	(8,739)	(1,872)
Net Cash Provided by (Used in) Operating Activities	160,158	147,836	44,995
Cash Flows From Investing Activities
Cash Paid for Acquisitions, net of cash acquired	(6,743)	(30,397)	(70,481)
Net Cash Provided by (Used in) Investing Activities	24,917	(77,344)	(43,866)
Cash Flows From Financing Activities
Proceeds from Equity Offering		168,140	77,185
Foreign Currency Translation	1,463	(3,843)	349
Dividends	(24,296)	(19,346)	(12,358)
Net Cash (Used in) Provided by Financing Activities	(110,012)	(25,081)	(66,823)
Net Increase (Decrease) in Cash and Cash Equivalents	76,526	41,568	(65,345)
Cash and Cash Equivalents-Beginning of Period	182,905	141,337	206,682
Cash and Cash Equivalents-End of Period	259,431	182,905	141,337
Parent Company
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income (Loss)	28,889	6,952	8,954
Undistributed Income of Subsidiary	(53,229)	(21,083)	(20,618)
Accretion on Long-term Debt	1,711	1,582	1,464
(Increase) Decrease in Operating Assets:
Other Assets	14,310	12,105	(1,324)
Increase (Decrease) in Operating Liabilities:
Payable to Uncombined Affiliates		957
Taxes Payable	11,872
Other Liabilities	(3,101)	(574)
Net Cash Provided by (Used in) Operating Activities	452	(61)	(11,524)
Cash Flows From Investing Activities
Cash Paid for Acquisitions, net of cash acquired		(30,397)
Investment in Subsidiary	24,239	(22,994)	23,760
Net Cash Provided by (Used in) Investing Activities	24,239	(53,391)	23,760
Cash Flows From Financing Activities
Proceeds from Equity Offering		168,140	77,185
Purchase of Evercore LP Units	(395)	(95,342)	(76,763)
Foreign Currency Translation			(300)
Dividends	(24,296)	(19,346)	(12,358)
Net Cash (Used in) Provided by Financing Activities	(24,691)	53,452	(12,236)
Net Increase (Decrease) in Cash and Cash Equivalents
Cash and Cash Equivalents-Beginning of Period
Cash and Cash Equivalents-End of Period