Evercore Partners Inc. (Parent Company Only) Financial Statements - Additional information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended													12 Months Ended						12 Months Ended				12 Months Ended				12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Minimum	Dec. 31, 2011 Minimum	Dec. 31, 2012 Maximum	Dec. 31, 2011 Maximum	Dec. 31, 2012 Class A	Dec. 31, 2011 Class A	Aug. 19, 2011 Class A	Dec. 31, 2012 Class B	Dec. 31, 2011 Class B	Dec. 31, 2012 Commitments	Dec. 31, 2012 Share Repurchase Program	Dec. 31, 2012 Share Repurchase Program Minimum	Dec. 31, 2012 Share Repurchase Program Maximum	Dec. 31, 2012 Parent Company	Dec. 31, 2012 Parent Company Class A	Dec. 31, 2011 Parent Company Class A	Dec. 31, 2012 Parent Company Class A Minimum	Dec. 31, 2012 Parent Company Class A Maximum	Dec. 31, 2012 Parent Company Class B	Dec. 31, 2011 Parent Company Class B	Dec. 31, 2012 Parent Company Morse Williams Class A	Dec. 31, 2012 Parent Company MJC Associates Agreement Class A	Dec. 31, 2012 Parent Company Lexicon Partnership LLP Class A	Dec. 31, 2012 Parent Company Commitments	Dec. 31, 2012 Parent Company Share Repurchase Program Class A	Dec. 31, 2012 Parent Company Share Repurchase Program Class A Minimum	Dec. 31, 2012 Parent Company Share Repurchase Program Class A Maximum
Condensed Financial Information Of Parent Company Only Disclosure [Line Items]
Common Stock, shares authorized																1,000,000,000	1,000,000,000		1,000,000	1,000,000						1,000,000,000	1,000,000,000			1,000,000	1,000,000
Common Stock, par value																$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01						$ 0.01	$ 0.01			$ 0.01	$ 0.01
Common Stock, shares issued																35,040,501	31,014,265		43	47						35,040,501	31,014,265			43	47
Common Stock, shares cancelled																														4,000
Exchange value of common stock																														$ 1
Shares purchased for the net settlement of stock-based compensation awards									726,000	1,587,000																726,000
Treasury stock acquired, market value per share												$ 21.71	$ 15.76	$ 29.62	$ 36.41								$ 22.58	$ 26.62				$ 21.71	$ 29.62								$ 22.58	$ 26.62
Number of shares repurchased																						1,884,000														1,884,000
Increase in Treasury Stock									66,588	45,105																66,588
Contingent consideration, treasury shares issued																																39,000	65,000	116,000
Decrease in treasury stock									5,641	636															5,641
Declared and paid dividends	$ 0.22	$ 0.20	$ 0.20	$ 0.20	$ 0.20	$ 0.18	$ 0.18	$ 0.18	$ 0.82	$ 0.74	$ 0.63														$ 0.82
Dividend declared and paid, total									24,296	19,346															24,296
Contractual obligations related to senior notes																									169,920
Payment to the senior notes to the tax receivable agreement, within one year or less																									6,240
Payment to the senior notes to the tax receivable agreement, one to three years																									12,480
Payment to the senior notes to the tax receivable agreement three to five years																									12,480
Payment to the senior notes to the tax receivable agreement, after five years																									138,720
Contractual obligations related to the Tax Receivable Agreements																					172,624				172,624
Payment to the counterparties to the Tax Receivable Agreement, within one year or less																					7,274														7,274
Payment to the counterparties to the Tax Receivable Agreement, one to three years																					26,582														26,582
Payment to the counterparties to the Tax Receivable Agreement, three to five years																					29,874														29,874
Payment to the counterparties to the Tax Receivable Agreement, after five years																					$ 108,894														$ 108,894