Evercore (EVR) 10-Q 1 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 24, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Trading Symbol	EVR
Entity Registrant Name	EVERCORE INC.
Entity Central Index Key	1,360,901
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		40,471,185
Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		86

Condensed Consolidated Statemen

Condensed Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current Assets
Cash and Cash Equivalents	$ 425,152	$ 609,587
Marketable Securities and Certificates of Deposit	311,128	128,559
Financial Instruments Owned and Pledged as Collateral at Fair Value	22,493	19,374
Securities Purchased Under Agreements to Resell	3,616	10,645
Accounts Receivable (net of allowances of $2,956 and $2,772 at September 30, 2018 and December 31, 2017, respectively)	232,256	184,993
Receivable from Employees and Related Parties	23,872	17,030
Other Current Assets	68,296	30,017
Total Current Assets	1,086,813	1,000,205
Investments	89,008	98,313
Deferred Tax Assets	227,027	198,894
Furniture, Equipment and Leasehold Improvements (net of accumulated depreciation and amortization of $84,334 and $70,264 at September 30, 2018 and December 31, 2017, respectively)	68,825	68,593
Goodwill	133,367	134,231
Intangible Assets (net of accumulated amortization of $38,917 and $32,018 at September 30, 2018 and December 31, 2017, respectively)	12,678	19,577
Other Assets	87,889	65,073
Total Assets	1,705,607	1,584,886
Current Liabilities
Accrued Compensation and Benefits	330,510	340,165
Accounts Payable and Accrued Expenses	41,669	34,111
Securities Sold Under Agreements to Repurchase	26,130	30,027
Payable to Employees and Related Parties	34,167	31,167
Taxes Payable	6,255	16,494
Other Current Liabilities	24,013	12,088
Total Current Liabilities	462,744	464,052
Notes Payable	168,543	168,347
Subordinated Borrowings	0	6,799
Amounts Due Pursuant to Tax Receivable Agreements	101,509	90,375
Other Long-term Liabilities	73,414	58,945
Total Liabilities	806,210	788,518
Commitments and Contingencies (Note 16)
Evercore Inc. Stockholders' Equity
Additional Paid-In-Capital	1,764,705	1,600,699
Accumulated Other Comprehensive Income (Loss)	(29,040)	(31,411)
Retained Earnings	224,627	79,461
Treasury Stock at Cost (24,926,239 and 23,017,750 shares at September 30, 2018 and December 31, 2017, respectively)	(1,292,863)	(1,105,406)
Total Evercore Inc. Stockholders' Equity	668,086	543,964
Noncontrolling Interest	231,311	252,404
Total Equity	899,397	796,368
Total Liabilities and Equity	1,705,607	1,584,886
Class A [Member]
Evercore Inc. Stockholders' Equity
Common Stock	657	621
Class B [Member]
Evercore Inc. Stockholders' Equity
Common Stock	$ 0	$ 0

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounts Receivable, Allowances	$ 2,956	$ 2,772
Furniture, Equipment and Leasehold Improvements, Accumulated Depreciation and Amortization	84,334	70,264
Accumulated Amortization	$ 38,917	$ 32,018
Treasury Stock at Cost, Shares	24,926,239	23,017,750
Class A [Member]
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,000,000,000	1,000,000,000
Common Stock, Shares Issued	65,709,493	62,119,904
Common Stock, Shares Outstanding	40,783,254	39,102,154
Class B [Member]
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,000,000	1,000,000
Common Stock, Shares Issued	86	82
Common Stock, Shares Outstanding	86	82

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Investment Banking:(1)
Advisory Fees	[1]	$ 305,949	$ 332,753	$ 1,047,259	$ 939,841
Underwriting Fees	[1]	11,440	11,034	62,784	30,170
Commissions and Related Fees	[1]	45,337	45,390	139,447	148,898
Asset Management and Administration Fees(1)	[1]	12,678	16,284	36,603	47,037
Other Revenue, Including Interest and Investments(1)	[1]	10,058	6,553	20,826	13,363
Total Revenues		385,462	412,014	1,306,919	1,179,309
Interest Expense		4,203	5,413	13,620	14,991
Net Revenues		381,259	406,601	1,293,299	1,164,318
Expenses
Employee Compensation and Benefits		225,452	246,772	766,537	689,186
Occupancy and Equipment Rental		15,367	13,531	43,249	40,191
Professional Fees(1)	[1]	19,698	15,836	56,581	42,489
Travel and Related Expenses		16,880	15,113	50,858	46,976
Communications and Information Services		10,590	10,613	31,634	30,865
Depreciation and Amortization		6,815	6,421	20,209	18,267
Execution, Clearing and Custody Fees(1)	[1]	3,068	3,455	7,818	10,972
Special Charges		1,967	0	3,864	21,507
Acquisition and Transition Costs		0	599	21	976
Other Operating Expenses(1)	[1]	6,882	7,191	20,657	18,224
Total Expenses		306,719	319,531	1,001,428	919,653
Income Before Income from Equity Method Investments and Income Taxes		74,540	87,070	291,871	244,665
Income from Equity Method Investments		2,298	1,827	6,842	5,507
Income Before Income Taxes		76,838	88,897	298,713	250,172
Provision for Income Taxes		17,539	28,815	48,018	69,566
Net Income		59,299	60,082	250,695	180,606
Net Income Attributable to Noncontrolling Interest		9,838	14,171	36,760	35,740
Net Income Attributable to Evercore Inc.		49,461	45,911	213,935	144,866
Net Income Attributable to Evercore Inc. Common Shareholders		$ 49,461	$ 45,911	$ 213,935	$ 144,866
Weighted Average Shares of Class A Common Stock Outstanding
Basic (in shares)		40,966	39,045	40,762	39,873
Diluted (in shares)		45,858	44,036	45,542	44,887
Net Income Per Share Attributable to Evercore Inc. Common Shareholders:
Basic (in dollars per share)		$ 1.21	$ 1.18	$ 5.25	$ 3.63
Diluted (in dollars per share)		1.08	1.04	4.70	3.23
Dividends Declared Per Share of Class A Common Stock (in dollars per share)		$ 0.5	$ 0.34	$ 1.40	$ 1.02
[1]	Certain balances in the prior period were reclassified to conform to their current presentation. See Note 2 for further information.

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net Income	$ 59,299	$ 60,082	$ 250,695	$ 180,606
Other Comprehensive Income, net of tax:
Unrealized Gain (Loss) on Marketable Securities and Investments, net	(11)	24	(433)	401
Foreign Currency Translation Adjustment Gain, net	2,884	4,832	583	5,993
Other Comprehensive Income	2,873	4,856	150	6,394
Comprehensive Income	62,172	64,938	250,845	187,000
Comprehensive Income Attributable to Noncontrolling Interest	10,265	15,131	36,768	37,004
Comprehensive Income Attributable to Evercore Inc.	$ 51,907	$ 49,807	$ 214,077	$ 149,996

Condensed Consolidated Statem_5

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]
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				58,292,567				(19,101,711)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		180,606					144,866		35,740
Other Comprehensive Income		6,394				5,130			1,264
Treasury Stock Purchases		(291,689)						$ (291,689)
Treasury Stock Purchases, Shares								(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)					(47,776)
Noncontrolling Interest (Note 13)		(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				61,585,638				(22,991,090)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect of Accounting Change(1)	[1]	0				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			39,102,154	62,119,904				(23,017,750)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		250,695					213,935		36,760
Other Comprehensive Income		150				142			8
Treasury Stock Purchases		$ (187,457)						$ (187,457)
Treasury Stock Purchases, Shares		(1,908,000)						(1,908,489)
Evercore LP Units Purchased or Converted into Class A Common Stock		$ 15,701		$ 11	58,256				(42,566)
Evercore LP Units Purchased or Converted into Class A Common Stock, Shares				1,080,554
Equity-based Compensation Awards		146,158		$ 25	131,208				14,925
Equity-based Compensation Awards, Shares				2,509,035
Dividends		(66,540)					(66,540)
Noncontrolling Interest (Note 13)		(55,678)			(25,458)				(30,220)
Ending Balance at Sep. 30, 2018		$ 899,397		$ 657	$ 1,764,705	$ (29,040)	$ 224,627	$ (1,292,863)	$ 231,311
Ending Balance, Shares at Sep. 30, 2018			40,783,254	65,709,493				(24,926,239)
[1]	(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). See Note 3 for further information.

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows From Operating Activities
Net Income	$ 250,695	$ 180,606
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Net (Gains) Losses on Investments, Marketable Securities and Contingent Consideration	(26)	239
Equity Method Investments	2,535	1,863
Equity-Based and Other Deferred Compensation	208,858	163,094
Impairment of Goodwill and Equity Method Investments	0	21,507
Depreciation, Amortization and Accretion	21,432	18,453
Bad Debt Expense	2,244	2,547
Deferred Taxes	(1,091)	(1,849)
Decrease (Increase) in Operating Assets:
Marketable Securities	242	707
Financial Instruments Owned and Pledged as Collateral at Fair Value	(2,142)	(1,526)
Securities Purchased Under Agreements to Resell	7,457	2,910
Accounts Receivable	(51,341)	23,423
Receivable from Employees and Related Parties	(6,878)	(2,102)
Other Assets	(59,145)	10,047
(Decrease) Increase in Operating Liabilities:
Accrued Compensation and Benefits	(51,246)	(52,481)
Accounts Payable and Accrued Expenses	5,379	(96)
Securities Sold Under Agreements to Repurchase	(5,303)	(1,405)
Payables to Employees and Related Parties	3,001	471
Taxes Payable	(11,267)	(18,471)
Other Liabilities	(2,758)	(21,624)
Net Cash Provided by Operating Activities	310,646	326,313
Cash Flows From Investing Activities
Investments Purchased	(45)	(857)
Distributions of Private Equity Investments	2,143	1,140
Marketable Securities:
Proceeds from Sales and Maturities	162,318	38,436
Purchases	(304,950)	(22,347)
Maturity of Certificates of Deposit	63,527	0
Purchase of Certificates of Deposit	(100,000)	(63,417)
Purchase of Furniture, Equipment and Leasehold Improvements	(11,881)	(25,142)
Net Cash Provided by (Used in) Investing Activities	(188,888)	(72,187)
Cash Flows From Financing Activities
Issuance of Noncontrolling Interests	1,165	110
Distributions to Noncontrolling Interests	(30,374)	(26,315)
Short-Term Borrowing	30,000	30,000
Repayment of Short-Term Borrowing	(30,000)	(30,000)
Repayment of Subordinated Borrowings	(6,799)	(9,751)
Purchase of Treasury Stock and Noncontrolling Interests	(212,959)	(301,001)
Dividends - Class A Stockholders	(57,448)	(40,723)
Net Cash Provided by (Used in) Financing Activities	(306,415)	(377,680)
Effect of Exchange Rate Changes on Cash	1,711	5,541
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(182,946)	(118,013)
Cash, Cash Equivalents and Restricted Cash-Beginning of Period	617,385	575,637
Cash, Cash Equivalents and Restricted Cash-End of Period	434,439	457,624
SUPPLEMENTAL CASH FLOW DISCLOSURE
Payments for Interest	16,008	16,745
Payments for Income Taxes	47,989	88,865
Accrued Dividends	9,092	7,054
Settlement of Contingent Consideration	$ 0	$ 10,780

Organization

Organization	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Organization	Organization Evercore Inc. and subsidiaries (the "Company") is an investment banking and investment management firm, incorporated in Delaware on July 21, 2005 and headquartered in New York, New York. The Company is a holding company which owns a controlling interest in Evercore LP, a Delaware limited partnership ("Evercore LP"). Subsequent to the Company's initial public offering ("IPO"), the Company became the sole general partner of Evercore LP. The Company operates from its offices and through its affiliates in North America, Europe, South America and Asia. The Investment Banking segment includes the advisory business through which the Company provides advice to clients on significant mergers, acquisitions, divestitures, shareholder activism and other strategic corporate transactions, with a particular focus on advising prominent multinational corporations and substantial private equity firms on large, complex transactions. The Company also provides restructuring advice to companies in financial transition, as well as to creditors, shareholders and potential acquirers. In addition, the Company provides its clients with capital markets advice, underwrites securities offerings, raises funds for financial sponsors and provides advisory services focused on secondary transactions for private funds interests. The Investment Banking business also includes the Evercore ISI business through which the Company offers macroeconomic, policy and fundamental equity research and agency-based equity securities trading for institutional investors. On April 23, 2018, the Company announced the expansion of its global investment banking platform by establishing a Real Estate Capital Advisory business ("RECA") within its existing Private Capital Advisory L.P. ("PCA") business. See Note 5 for further information. The Investment Management segment includes the wealth management business through which the Company provides investment advisory, wealth management and fiduciary services for high net-worth individuals and associated entities, the institutional asset management business through which the Company, directly and through affiliates, manages financial assets for sophisticated institutional investors and the private equity business which holds interests in private equity funds which are not managed by the Company. The Company completed the sale of the Institutional Trust and Independent Fiduciary business of Evercore Trust Company, N.A. ("ETC") on October 18, 2017.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies For a further discussion of the Company's accounting policies, refer to the Company's Annual Report on Form 10-K for the year ended December 31, 2017. Basis of Presentation – The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with the instructions to Form 10-Q. As permitted by the rules and regulations of the United States Securities and Exchange Commission, the unaudited condensed consolidated financial statements contain certain condensed financial information and exclude certain footnote disclosures normally included in audited consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). The accompanying condensed consolidated financial statements are unaudited and are prepared in accordance with U.S. GAAP. In the opinion of the Company's management, the accompanying unaudited condensed consolidated financial statements contain all adjustments, including normal recurring accruals, necessary to fairly present the accompanying unaudited condensed consolidated financial statements. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company's annual report on Form 10-K for the year ended December 31, 2017. The December 31, 2017 Unaudited Condensed Consolidated Statement of Financial Condition data was derived from audited consolidated financial statements, but does not include all disclosures required by U.S. GAAP. Operating results for the interim periods are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2018. The accompanying unaudited condensed consolidated financial statements of the Company are comprised of the consolidation of Evercore LP and Evercore LP's wholly-owned and majority-owned direct and indirect subsidiaries, including Evercore Group L.L.C. ("EGL"), a registered broker-dealer in the U.S. The Company's policy is to consolidate all subsidiaries in which it has a controlling financial interest, as well as any variable interest entities ("VIEs") where the Company is deemed to be the primary beneficiary, when it has the power to make the decisions that most significantly affect the economic performance of the VIE and has the obligation to absorb significant losses or the right to receive benefits that could potentially be significant to the VIE. The Company reviews factors, including the rights of the equity holders and obligations of equity holders to absorb losses or receive expected residual returns, to determine if the investment is a VIE. In evaluating whether the Company is the primary beneficiary, the Company evaluates its economic interests in the entity held either directly or indirectly by the Company. The consolidation analysis is generally performed qualitatively. This analysis, which requires judgment, is performed at each reporting date. Evercore LP is a VIE and the Company is the primary beneficiary. Specifically, the Company has the majority economic interest in Evercore LP and has decision making authority that significantly affects the economic performance of the entity while the limited partners have no kick-out or substantive participating rights. The assets and liabilities of Evercore LP represent substantially all of the consolidated assets and liabilities of the Company with the exception of U.S. corporate taxes and related items, which are presented on the Company's (Parent Company Only) Condensed Statements of Financial Position in Note 23 to the Company's consolidated financial statements in the Company's Annual Report on Form 10-K for the year ended December 31, 2017. International Strategy & Investment (U.K.) Limited ("ISI U.K.") and Evercore Partners International LLP ("Evercore U.K.") are also VIEs and the Company is the primary beneficiary of these VIEs. Specifically for ISI U.K., the Company provides financial support through a transfer pricing agreement with this entity, which exposes the Company to losses that are potentially significant to the entity, and has decision making authority that significantly affects the economic performance of the entity. The Company has the majority economic interest in Evercore U.K. and has decision making authority that significantly affects the economic performance of this entity. The Company included in its Unaudited Condensed Consolidated Statements of Financial Condition ISI U.K. and Evercore U.K. assets of $116,866 and liabilities of $75,482 at September 30, 2018 and assets of $126,078 and liabilities of $102,487 at December 31, 2017. All intercompany balances and transactions with the Company's subsidiaries have been eliminated upon consolidation. The Company adopted ASU No. 2014-09, "Revenue from Contracts with Customers" ("ASU 2014-09") on January 1, 2018 using the modified retrospective method of transition applied to contracts which were not completed as of January 1, 2018. The Company did not have a cumulative-effect adjustment as of the date of adoption. Following the adoption of ASU 2014-09, the Company’s accounting policies are as follows: ASU 2014-09 provides a five step model to revenue recognition: Step 1: Identify the contract(s) with a customer Step 2: Identify the performance obligations in the contract Step 3: Determine the transaction price Step 4: Allocate the transaction price to the performance obligations in the contract Step 5: Recognize revenue when (or as) the entity satisfies a performance obligation The Company applies this model to its Investment Banking and Asset Management revenue streams. Investment Banking Revenue - The Company earns investment banking fees from clients for providing advisory services on strategic matters, including mergers, acquisitions, divestitures, leveraged buyouts, restructurings, activism and defense and similar corporate finance matters. The Company's Investment Banking services also include services related to securities underwriting, private placement services and commissions for agency-based equity trading services and equity research. Revenue is recognized as the Company satisfies performance obligations, upon transfer of control of promised services to customers in an amount that reflects the consideration the Company expects to receive in exchange for these services. The Company’s contracts with customers may include promises to transfer multiple services to a customer. Determining whether services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. For performance obligations satisfied over time, determining a measure of progress requires the Company to make significant judgments that affect the timing of revenue recognized. For certain advisory services, the Company has concluded that performance obligations are satisfied over time. This is based on the premise that the Company transfers control of services and the client simultaneously receives benefits from these services over the course of an engagement. For performance obligations satisfied at a point in time, determining when control transfers requires the Company to make significant judgments that affect the timing of when revenue is recognized. The Company records Investment Banking Revenue on the Unaudited Condensed Consolidated Statements of Operations for the following: Advisory Fees - In general, advisory fees are paid at the time the Company signs an engagement letter, during the course of the engagement or when an engagement is completed. In some circumstances, and as a function of the terms of an engagement letter, the Company may receive fixed retainer fees for financial advisory services concurrent with, or soon after, the execution of the engagement letter or over the course of the engagement, where the engagement letter will specify a future service period associated with those fees. The Company may also receive announcement fees upon announcement of a transaction in addition to success fees upon closing of a transaction or another defined outcome, both of which represent variable consideration. This variable consideration will be included in the transaction price, as defined, and recognized as revenue to the extent that it is probable that a significant reversal of revenue will not occur. When assessing probability, the Company applies careful analysis and judgment to the remaining factors necessary for completion of a transaction, including factors outside of the Company's control. A transaction can fail to be completed for many reasons which are outside of the Company’s control, including failure of parties to agree upon final terms with the counterparty, to secure necessary board or shareholder approvals, to secure necessary financing or to achieve necessary regulatory approvals, or due to adverse market conditions. In the case of bankruptcy engagements, fees are subject to approval of the court. With respect to retainer, announcement and success fees, there are no distinct performance obligations aside from advisory activities, which are generally focused on achieving a milestone (typically, the announcement and/or the closing of a transaction). These advisory services are provided over time throughout the contract period. The Company recognizes revenue when distinct services are performed and when it is probable that a reversal of revenue will not occur, which is generally upon the announcement or closing of a transaction. Accordingly, in any given period, advisory fees recognized for certain transactions will relate to services performed in prior periods. In circumstances in which retainer fees are received in advance of services, these fees are initially recorded as deferred revenue (a contract liability), which is recorded in Other Current Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition, and subsequently recognized as advisory fee revenue in Advisory Fees on the Unaudited Condensed Consolidated Statements of Operations during the applicable time period within which the service is rendered. Announcement fees for advisory services are recognized upon announcement (the point at which it is determined that the reversal of revenue is not probable) and all other requirements for revenue recognition are satisfied. A portion of the announcement fee may be deferred based on the services remaining to be completed, if any. Success fees for advisory services, such as merger and acquisition advice, are recognized when it is determined that the reversal of revenue is not probable and all other requirements for revenue recognition are satisfied, which is generally at closing of the transaction. With respect to fairness or valuation opinions, fees are fixed and there is a distinct performance obligation, since the opinion is rendered separate from any other advisory activities. Revenues related to fairness or valuation opinions are recognized at the point in time when the opinion has been rendered and delivered to the client. In the event the Company was to receive an opinion or success fee in advance of the completion conditions noted above, such fee would initially be recorded as deferred revenue (a contract liability) in Other Current Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition and subsequently recognized as advisory fee revenue in Advisory Fees on the Unaudited Condensed Consolidated Statements of Operations when the conditions of completion have been satisfied. Placement fee revenues are attributable to capital raising on both corporations and financial sponsors. The Company recognizes placement fees in accordance with the terms of the engagement letter, which are generally contingent on the achievement of a capital commitment by an investor, at the time of the client's acceptance of capital or capital commitments. Underwriting Fees - Underwriting fees are attributable to public and private offerings of equity and debt securities and are recognized at the point in time when the offering has been deemed to be completed by the lead manager of the underwriting group. When the offering is completed, the performance obligation has been satisfied and the Company recognizes the applicable management fee, selling concession and underwriting fee. Estimated offering expenses are presented gross in the Unaudited Condensed Consolidated Statements of Operations. Commissions and Related Fees - Commissions and Related Fees include commissions received from customers for the execution of agency-based brokerage transactions in listed and over-the-counter equities. The execution of each trade order represents a distinct performance obligation and the transaction price at the point in time of trade order execution is fixed. Trade execution is satisfied at the point in time that the customer has control of the asset and as such, fees are recorded on a trade date basis or, in the case of payments under commission sharing arrangements, when earned. The Company also earns subscription fees for the sales of research. The delivery of research under subscription arrangements represents a distinct performance obligation that is satisfied over time. The fees are fixed and are recognized over the period in which the performance obligation is satisfied. Cash received before the subscription period ends is initially recorded as deferred revenue (a contract liability) in Other Current Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition, and is recognized in Commissions and Related Fees on the Unaudited Condensed Consolidated Statements of Operations ratably over the period in which the related services are rendered. Taxes collected from customers and remitted to governmental authorities are presented on a net basis on the Unaudited Condensed Consolidated Statements of Operations. Asset Management and Administration Fees - The Company's Investment Management business generates revenues from the management of client assets and through interests in private equity funds which are not managed by the Company. The Company’s contracts with customers may include promises to transfer multiple services to a customer. Determining whether services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. For performance obligations satisfied over time, determining a measure of progress requires the Company to make significant judgments that affect the timing of revenue recognized. Asset management fees for third-party clients are generally based on the value of the assets under management and any performance fees that may be negotiated with the client. The management of asset portfolios represents a distinct performance obligation that is satisfied over time. These fees are generally recognized over the period that the related services are provided and in which the performance obligation is satisfied, based upon the beginning, ending or average value of the assets for the relevant period. Fees paid in advance of services rendered are initially recorded as deferred revenue (a contract liability), which is recorded in Other Current Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition, and are recognized in Asset Management and Administration Fees on the Unaudited Condensed Consolidated Statements of Operations ratably over the period in which the related service is rendered. Generally, to the extent performance fee arrangements have been negotiated, these fees are earned when the likelihood of clawback is mathematically improbable. Fees generated for serving as an independent fiduciary and/or trustee are either based on a flat fee, are pre-negotiated with the client or are based on the value of assets under administration. The management of assets under administration represents a distinct performance obligation that is satisfied over time. For ongoing engagements, fees are billed quarterly either in advance or in arrears. Fees paid in advance of services rendered and satisfaction of the performance obligation are initially recorded as deferred revenue (a contract liability) in Other Current Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition, and are recognized in Asset Management and Administration Fees on the Unaudited Condensed Consolidated Statements of Operations ratably over the period in which the related services are rendered and the performance obligation is satisfied. The Company records performance fee revenue from the private equity funds when the returns on the private equity funds' investments exceed certain threshold minimums. These performance fees, or carried interest, are computed in accordance with the underlying private equity funds' partnership agreements and are based on investment performance over the life of each investment partnership. The Company records performance fees upon the earlier of the termination of the investment fund or when the likelihood of clawback is mathematically improbable. Accounts Receivable and Contract Assets - Accounts Receivable consists primarily of investment banking fees and expense reimbursements charged to the Company's clients. The Company records Accounts Receivable, net of any allowance for doubtful accounts, when relevant revenue recognition criteria has been achieved and payment is conditioned on the passage of time. The Company maintains an allowance for doubtful accounts to provide coverage for estimated losses from its client receivables. The Company determines the adequacy of the allowance by estimating the probability of loss based on the Company's analysis of the client's creditworthiness and specifically reserves against exposure where the Company determines the receivables are impaired, which may include situations where a fee is in dispute or litigation has commenced. The Investment Banking and Investment Management receivables collection periods generally are within 90 days of invoice, with the exception of placement fees, which are generally collected within 180 days of invoice, and fees related to private funds capital raising, which are collected in a period exceeding one year . The collection period for restructuring transactions and private equity fee receivables may exceed 90 days . Receivables that are collected in a period exceeding one year are reflected in Other Assets on the Unaudited Condensed Consolidated Statements of Financial Condition. The Company records contract assets within Other Current Assets and Other Assets on the Unaudited Condensed Consolidated Statement of Financial Condition when payment is due from a client conditioned on future performance or the occurrence of other events. The Company also recognizes a contract asset for the incremental costs of obtaining a contract with a customer if the benefit of those costs is expected to be longer than one year . The Company applies a practical expedient to expense costs to obtain a contract as incurred when the amortization period is one year or less. Reclassifications - During 2018, certain balances on the Unaudited Condensed Consolidated Statements of Operations for the prior period were reclassified to conform to their current presentation. Execution, Clearing and Custody Fees - Other Operating Expenses of $3,140 and $10,029 for the three and nine months ended September 30, 2017, respectively, and Professional Fees of $315 and $943 for the three and nine months ended September 30, 2017, respectively, were reclassified to a new expense line item "Execution, Clearing and Custody Fees" on the Unaudited Condensed Consolidated Statements of Operations. Other Revenue, Including Interest and Investments - The Company renamed "Other Revenue, Including Interest" to "Other Revenue, Including Interest and Investments" on the Unaudited Condensed Consolidated Statements of Operations and reclassified ($343) and ($606) of principal trading losses from Investment Banking Revenue for the three and nine months ended September 30, 2017, respectively, and $1,952 and $1,427 of net realized and unrealized gains on private equity investments from Investment Management Revenue for the three and nine months ended September 30, 2017, respectively, to "Other Revenue, Including Interest and Investments." Investment Banking Revenue - Following the above reclassification, the Company disaggregated "Investment Banking Revenue" into "Advisory Fees," "Underwriting Fees" and "Commissions and Related Fees" on the Unaudited Condensed Consolidated Statements of Operations. Asset Management and Administration Fees - Following the above reclassification, the Company has renamed "Investment Management Revenue" to "Asset Management and Administration Fees" on the Unaudited Condensed Consolidated Statements of Operations, which includes management fees from the wealth management and institutional asset management businesses.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2018
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements ASU 2014-09 – In May 2014, the Financial Accounting Standards Board ("FASB") issued ASU 2014-09. ASU 2014-09 provides amendments to ASC 605, " Revenue Recognition" and creates ASC 606, "Revenue from Contracts with Customers," which changes the requirements for revenue recognition and amends the disclosure requirements. In August 2015, the FASB issued ASU No. 2015-14, " Deferral of the Effective Date, " which provides amendments that defer the effective date of ASU 2014-09 by one year. In April 2016, the FASB issued ASU No. 2016-10, "Identifying Performance Obligations and Licensing," which provides clarification to identifying performance obligations and the licensing implementation guidance in ASU 2014-09. In May 2016, the FASB issued ASU No. 2016-12, "Narrow-Scope Improvements and Practical Expedients," which provides clarification on certain issues identified in the guidance on assessing collectability, presentation of sales taxes, noncash consideration, and completed contracts and contract modifications at transition in ASU 2014-09. The amendments in these updates are effective either retrospectively to each prior reporting period presented, or as a cumulative-effect adjustment as of the date of adoption, during interim and annual periods beginning after December 15, 2017, with early adoption permitted beginning after December 15, 2016. The Company adopted ASU 2014-09 on January 1, 2018 using the modified retrospective method of transition, which requires a cumulative-effect adjustment as of the date of adoption. The Company did not have a cumulative-effect adjustment as of the date of adoption. Following the adoption of ASU 2014-09, success related advisory fees, for which payment is generally dependent on the closing of a strategic transaction, a financing arrangement or some other defined outcome, are considered variable consideration as defined by the standard. ASU 2014-09 requires that revenue be recognized when it is probable that variable consideration will not be reversed in a future period. Accordingly, revenue recognition for such fees could be accelerated under ASU 2014-09 in rare circumstances, which will require careful analysis and judgment. Under legacy U.S. GAAP, the Company recognized such fees upon closing regardless of the probability of the outcome. The effect of the timing of revenue recognition could be material to any given reporting period. Furthermore, legacy U.S. GAAP allowed expenses related to underwriting transactions to be reflected net in related revenues. Under ASU 2014-09, those expenses are presented gross in the results of operations. See Notes 2 and 4 for further information. ASU 2016-01 - In January 2016, the FASB issued ASU No. 2016-01, "Recognition and Measurement of Financial Assets and Financial Liabilities" ("ASU 2016-01"). ASU 2016-01 provides amendments to ASC 825, "Financial Instruments," which change the requirements for certain aspects of recognition, measurement and presentation of financial assets and liabilities and amend the disclosure requirements. The amendments in this update are effective during interim and annual periods beginning after December 15, 2017. The amendments in this update should be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption and the amendments related to equity securities without readily determinable fair values should be applied prospectively. The Company adopted ASU 2016-01 on January 1, 2018, which resulted in a cumulative effect adjustment of cumulative unrealized losses, net of tax, on available-for-sale equity securities included in Accumulated Other Comprehensive Income (Loss) to Retained Earnings of ($2,229) . Following the adoption of ASU 2016-01, unrealized gains and losses on these securities are recorded in Other Revenue, Including Interest and Investments, on the Unaudited Condensed Consolidated Statements of Operations . The Company also holds equity securities without readily determinable fair values, which were accounted for under the cost method of accounting under legacy U.S. GAAP. Following the adoption of ASU 2016-01, the Company elected to measure each of its former cost method investments at its cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. See Notes 7 and 9 for further information. ASU 2016-02 - In February 2016, the FASB issued ASU No. 2016-02, "Leases (Topic 842)" ("ASU 2016-02"). ASU 2016-02 supersedes ASC 840, "Leases," and includes requirements for the recognition of a right-of-use asset and lease liability on the balance sheet by lessees for those leases classified as operating leases under previous guidance. In July 2018, the FASB issued ASU No. 2018-11, "Leases (Topic 842): Targeted Improvements," which provides an additional transition method to initially apply the new lease standard at the adoption date and recognize a cumulative-effect adjustment to Retained Earnings for prior periods as of the beginning of the fiscal year of adoption. The amendments in these updates are effective using a modified retrospective approach as of the date of adoption, during interim and annual periods beginning after December 15, 2018, with early adoption permitted. The Company anticipates adopting ASU 2016-02 on January 1, 2019 using the modified retrospective approach. The Company is in the process of evaluating its lease agreements under ASU 2016-02, including its lease agreement to expand its New York headquarters signed on July 1, 2018. See Note 16 for further information. The adoption will result in the present value of the Company's lease commitments which have a term in excess of one year being reflected on the Company's Statements of Financial Condition as a long-term asset with a corresponding liability, classified as current and non-current. The Company's lease commitments primarily relate to office space, as discussed in Note 16 and in Note 18 to the Company's consolidated financial statements in the Company's Annual Report on Form 10-K for the year ended December 31, 2017. The impact on the Company's earnings is not expected to be materially different from the current expense related to leases as required under legacy U.S. GAAP, which is primarily reflected in Occupancy and Equipment Rental expense on the Unaudited Condensed Consolidated Statements of Operations . ASU 2016-13 - In June 2016, the FASB issued ASU No. 2016-13, "Measurement of Credit Losses on Financial Instruments" ("ASU 2016-13"). ASU 2016-13 provides amendments to ASC 326, "Financial Instruments - Credit Losses," which amend the guidance on the impairment of financial instruments and adds an impairment model (the current expected credit loss (CECL) model) that is based on expected losses rather than incurred losses. Entities will recognize an allowance for its estimate of expected credit losses as of the end of each reporting period. The amendments in this update are effective during interim and annual periods beginning after December 15, 2019, with early adoption permitted after December 15, 2018. The Company currently uses the specific identification method for establishing credit provisions and write-offs of its trade accounts receivable. The Company anticipates adopting ASU 2016-13 on January 1, 2020 and does not anticipate a material difference between the current method and the CECL model. ASU 2016-15 - In August 2016, the FASB issued ASU No. 2016-15, "Classification of Certain Cash Receipts and Cash Payments" ("ASU 2016-15"). ASU 2016-15 provides amendments to ASC 230, " Statement of Cash Flows, " ("ASC 230") which provide guidance on the classification of certain cash receipts and payments in the statement of cash flows. The amendments in this update are effective retrospectively, or prospectively, if retrospective application is impracticable, during interim and annual periods beginning after December 15, 2017, with early adoption permitted. The adoption of ASU 2016-15 did not have a material impact on the Company's financial condition, results of operations and cash flows, or disclosures thereto. ASU 2016-18 - In November 2016, the FASB issued ASU No. 2016-18, " Restricted Cash " ("ASU 2016-18"). ASU 2016-18 provides amendments to ASC 230, which require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents and amounts generally described as restricted cash and restricted cash equivalents. The amendments in this update are effective retrospectively during interim and annual periods beginning after December 15, 2017, with early adoption permitted. The adoption of ASU 2016-18 resulted in restricted cash balances being included in the Unaudited Condensed Consolidated Statements of Cash Flows and expanded disclosure on these restricted cash balances. See Note 16 for further information. ASU 2017-01 - In January 2017, the FASB issued ASU No. 2017-01, "Clarifying the Definition of a Business" ("ASU 2017-01"). ASU 2017-01 provides amendments to ASC 805, " Business Combinations, " which clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The amendments in this update are effective prospectively during interim and annual periods beginning after December 15, 2017, with early adoption permitted. The adoption of ASU 2017-01 did not have a material impact on the Company's financial condition, results of operations and cash flows, or disclosures thereto. ASU 2017-09 - In May 2017, the FASB issued ASU No. 2017-09, "Scope of Modification Accounting" ("ASU 2017-09"). ASU 2017-09 provides amendments to ASC 718, "Compensation - Stock Compensation," ("ASC 718") which provide guidance and clarity around which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. The amendments in this update are effective prospectively during interim and annual periods beginning after December 15, 2017, with early adoption permitted. The adoption of ASU 2017-09 did not have a material impact on the Company's financial condition, results of operations and cash flows, or disclosures thereto. ASU 2018-02 - In February 2018, the FASB issued ASU No. 2018-02, "Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income" ("ASU 2018-02"). ASU 2018-02 provides amendments to ASC 220, “Income Statement - Reporting Other Comprehensive Income,” which allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. The amendments in this update are effective either in the period of adoption or retrospectively, to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized, during interim and annual periods beginning after December 15, 2018, with early adoption permitted. The Company is currently assessing the impact of this update on the Company's financial condition, results of operations and cash flows, or disclosures thereto. ASU 2018-05 - In March 2018, the FASB issued ASU No. 2018-05, "Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118" ("ASU 2018-05"). ASU 2018-05 adds various SEC paragraphs to ASC 740, “Income Taxes,” ("ASC 740") pursuant to the issuance of SEC Staff Accounting Bulletin No. 118 ("SAB 118"). The amendments in this update were effective upon issuance. See Note 18 for further information. ASU 2018-07 - In June 2018, the FASB issued ASU No. 2018-07, "Improvements to Nonemployee Share-Based Payment Accounting" ("ASU 2018-07"). ASU 2018-07 provides amendments to ASC 718 to align the accounting for share-based payment awards issued to employees and nonemployees, particularly surrounding the measurement date and impact of performance conditions. The amendments in this update are effective during interim and annual periods beginning after December 15, 2018, with early adoption permitted. The amendments in this update should be applied by means of a cumulative-effect adjustment to retained earnings as of the beginning of the fiscal year of adoption for liability-classified awards that have not been settled and equity-classified awards for which a measurement date has not been established by the date of adoption, and prospectively for all new awards granted after the date of adoption. The Company is currently assessing the impact of this update on the Company's financial condition, results of operations and cash flows, or disclosures thereto. ASU 2018-13 - In August 2018, the FASB issued ASU No. 2018-13, "Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement" ("ASU 2018-13"). ASU 2018-13 provides amendments to ASC 820, " Fair Value Measurements and Disclosures" ("ASC 820"), which remove the requirements surrounding the disclosure and policy of transfers between fair value levels and the valuation processes for recurring Level 3 fair value measurements. In addition, ASU 2018-13 adds disclosure requirements for changes in unrealized gains and losses for Level 3 measurements and the range and weighted average of significant unobservable inputs used in Level 3 fair value measurements. The amendments in this update are effective during interim and annual periods beginning after December 15, 2019, with early adoption permitted. The amendments on changes in unrealized gains and losses and unobservable inputs for Level 3 measurements should be applied prospectively, and all other amendments in this update should be applied retrospectively. The Company is currently assessing the impact of this update on the Company's financial condition, results of operations and cash flows, or disclosures thereto. ASU 2018-15 - In August 2018, the FASB issued ASU No. 2018-15, "Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract" ("ASU 2018-15"). ASU 2018-15 aligns the requirements for capitalizing implementation costs in a cloud computing arrangement that is a service contract with the requirements for capitalizing implementation costs incurred for internal-use software as prescribed by ASC 350, "Intangibles - Goodwill and Other." The amendments in this update are effective either prospectively, for eligible costs incurred on or after the date this guidance is first applied, or retrospectively, during interim and annual periods beginning after December 15, 2019, with early adoption permitted. The Company adopted ASU 2018-15 during the third quarter of 2018. The adoption of ASU 2018-15 did not have a material impact on the Company's financial condition, results of operations and cash flows, or disclosures thereto.

Revenue

Revenue	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	Revenue The following table presents revenue recognized by the Company for the three and nine months ended September 30, 2018: For the Three Months Ended September 30, 2018 For the Nine Months Ended September 30, 2018 Investment Banking: Advisory Fees $ 305,949 $ 1,047,259 Underwriting Fees 11,440 62,784 Commissions and Related Fees 45,337 139,447 Total Investment Banking $ 362,726 $ 1,249,490 Investment Management: Asset Management and Administration Fees: Wealth Management $ 11,560 $ 33,826 Institutional Asset Management 1,118 2,777 Total Investment Management $ 12,678 $ 36,603 Following the adoption of ASU 2014-09, expenses related to underwriting transactions are presented gross in the results of operations of the Company, whereas under legacy U.S. GAAP these expenses were presented net. Underwriting Fees are gross of related non-compensation expenses of $116 and $3,913 in the Unaudited Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2018, respectively. Professional Fees, Travel and Related Expenses, Communications and Information Services and Other Operating Expenses in the Unaudited Condensed Consolidated Statements of Operations are gross of non-compensation expenses of $34 , $16 , $16 and $50 , respectively, for the three months ended September 30, 2018 and $1,957 , $391 , $391 and $1,174 , respectively, for the nine months ended September 30, 2018. Contract Balances The change in the Company’s contract assets and liabilities during the period primarily reflects timing differences between the Company’s performance and the client’s payment. The Company’s receivables, contract assets and deferred revenue (contract liabilities) for the nine months ended September 30, 2018 are as follows: Receivables (Current) (1) Receivables (Long-term) (2) Contract Assets (Current) (3) Contract Assets (Long-term) (4) Deferred Revenue (Current Contract Liabilities) (5) Deferred Revenue (Long-term Contract Liabilities) (6) Balance at January 1, 2018 $ 184,993 $ 34,008 $ — $ — $ 3,147 $ 1,834 Increase (Decrease) 47,263 19,728 46,960 3,869 7,011 (103 ) Balance at September 30, 2018 $ 232,256 $ 53,736 $ 46,960 $ 3,869 $ 10,158 $ 1,731 (1) Included in Accounts Receivable on the Unaudited Condensed Consolidated Statements of Financial Condition. (2) Included in Other Assets on the Unaudited Condensed Consolidated Statements of Financial Condition. (3) Included in Other Current Assets on the Unaudited Condensed Consolidated Statements of Financial Condition. (4) Included in Other Assets on the Unaudited Condensed Consolidated Statements of Financial Condition. (5) Included in Other Current Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition. (6) Included in Other Long-term Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition. The Company's contract assets represent arrangements in which an estimate of variable consideration has been included in the transaction price and thereby recognized as revenue that precedes the contractual due date. The application of ASC 606 resulted in advisory revenue of $50,829 being recognized on the Unaudited Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2018, representing variable consideration under the standard for which it is probable that a significant reversal of revenue will not occur, substantially all of which would have been recognized in the fourth quarter of 2018 under the legacy accounting standard. Under ASC 606, revenue is recognized when all material conditions for completion have been met and it is probable that a significant revenue reversal will not occur in a future period. The Company recognized revenue of $3,740 and $8,984 on the Unaudited Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2018, respectively, that was previously included in deferred revenue on the Company’s Unaudited Condensed Consolidated Statements of Financial Condition . Generally, performance obligations under client arrangements will be settled within one year ; therefore, the Company has elected to apply the practical expedient in ASC 606-10-50-14.

Business Developments, Acquisit

Business Developments, Acquisition and Transition Costs, Special Charges and Intangible Asset Amortization	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
Acquisition and Transition Costs and Special Charges	Business Developments, Acquisition and Transition Costs, Special Charges and Intangible Asset Amortization Business Developments Real Estate Capital Advisory - On April 23, 2018, the Company announced the expansion of its global investment banking platform by establishing a Real Estate Capital Advisory business within its existing PCA business. This business is focused on secondary transactions for real estate oriented financial sponsors and private equity investors in conjunction with PCA’s existing fund monetization and recapitalization expertise. Certain RECA employees purchased interests in PCA, at fair value, resulting in an increase to Noncontrolling Interest of $770 on the Company's Unaudited Condensed Consolidated Statement of Financial Condition as of September 30, 2018. See Note 13 for further information. In conjunction with the establishment of the RECA business, the Company hired certain employees and entered into an arrangement with the former employer of these employees, which, among other things, provides for contingent consideration to be paid to the former employer of up to $4,463 , based on the completion of certain client engagements. The Company accounted for this transaction as an asset acquisition and will recognize the contingent consideration paid as an expense in Professional Fees on the Company's Unaudited Condensed Consolidated Statements of Operations as the related revenue from the underlying engagements is realized. The Company recognized $2,938 and $3,971 pursuant to this arrangement for the three and nine months ended September 30, 2018 , respectively. The Company is the general partner of PCA. Concurrent with this transaction, the Company performed an assessment under ASC 810, "Consolidation," ("ASC 810"), and concluded that PCA remains a VIE following this transaction and determined that the Company is still the primary beneficiary of this VIE. Specifically, the Company's general partner interest provides the Company with the ability to make decisions that significantly impact the economic performance of PCA, while the limited partners do not possess substantive participating rights over PCA. The Company's assessment of the primary beneficiary included assessing which parties have the power to significantly impact the economic performance and the obligation to absorb losses, which could be potentially significant to the entity, or the right to receive benefits from the entity that could be potentially significant. The assets of PCA are not generally available to the Company and the liabilities are generally non-recourse to the Company. Acquisition and Transition Costs The Company recognized $21 for the nine months ended September 30, 2018 and $599 and $976 for the three and nine months ended September 30, 2017 , respectively, as Acquisition and Transition Costs incurred in connection with acquisitions, divestitures, and other ongoing business development initiatives. These costs are primarily comprised of professional fees for legal and other services. Special Charges The Company recognized $1,967 and $3,864 for the three and nine months ended September 30, 2018, respectively, as Special Charges incurred related to separation benefits and costs for the termination of certain contracts associated with closing the Company's agency trading platform in the U.K. and separation benefits and related charges associated with the Company's businesses in Mexico, as well as the acceleration of depreciation expense for leasehold improvements in conjunction with the previously announced expansion of the Company's headquarters in New York. The Company recognized $21,507 for the nine months ended September 30, 2017, as Special Charges incurred related to an impairment charge of $7,107 associated with the impairment of goodwill in the Company's Institutional Asset Management reporting unit and an impairment charge of $14,400 associated with the impairment of the Company's investment in G5 Holdings S.A. ("G5"). Intangible Asset Amortization Expense associated with the amortization of intangible assets for Investment Banking was $2,191 and $6,571 for the three and nine months ended September 30, 2018 , respectively, and $2,357 and $7,071 for the three and nine months ended September 30, 2017 , respectively, included within Depreciation and Amortization expense on the Unaudited Condensed Consolidated Statements of Operations. Expense associated with the amortization of intangible assets for Investment Management was $110 and $328 for the three and nine months ended September 30, 2018 , respectively, and $118 and $354 for the three and nine months ended September 30, 2017 , respectively, included within Depreciation and Amortization expense on the Unaudited Condensed Consolidated Statements of Operations.

Related Parties

Related Parties	9 Months Ended
	Sep. 30, 2018
Related Party Transactions [Abstract]
Related Parties	Related Parties Other Assets on the Unaudited Condensed Consolidated Statements of Financial Condition includes the long-term portion of loans receivable from certain employees of $18,692 and $22,309 as of September 30, 2018 and December 31, 2017 , respectively. The Company had $6,700 in subordinated borrowings with an executive officer of the Company as of December 31, 2017 . In March 2018, the Company repaid all of these borrowings. See Note 11 for further information.

Marketable Securities and Certi

Marketable Securities and Certificates of Deposit	9 Months Ended
	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Marketable Securities and Certificates of Deposit	Marketable Securities and Certificates of Deposit The amortized cost and estimated fair value of the Company's Marketable Securities as of September 30, 2018 and December 31, 2017 were as follows: September 30, 2018 December 31, 2017 Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Securities Investments - Debt Securities $ 1,298 $ — $ 5 $ 1,293 $ 1,806 $ — $ 11 $ 1,795 Securities Investments - Equity Securities 666 — 310 356 5,388 — 4,144 1,244 Debt Securities Carried by EGL 145,731 159 63 145,827 34,233 87 26 34,294 Investment Funds 55,940 7,716 4 63,652 22,027 5,678 6 27,699 Total $ 203,635 $ 7,875 $ 382 $ 211,128 $ 63,454 $ 5,765 $ 4,187 $ 65,032 Scheduled maturities of the Company's available-for-sale debt securities within the Securities Investments portfolio as of September 30, 2018 and December 31, 2017 were as follows: September 30, 2018 December 31, 2017 Amortized Cost Fair Value Amortized Cost Fair Value Due within one year $ 200 $ 200 $ 204 $ 204 Due after one year through five years 999 995 1,602 1,591 Due after five years through 10 years 99 98 — — Total $ 1,298 $ 1,293 $ 1,806 $ 1,795 Since the Company has the ability and intent to hold available-for-sale securities until a recovery of fair value is equal to an amount approximating its amortized cost, which may be at maturity, and has not incurred credit losses on its securities, it does not consider such unrealized loss positions to be other-than-temporarily impaired at September 30, 2018 . Securities Investments - Debt Securities Securities Investments - Debt Securities are classified as available-for-sale securities within Marketable Securities on the Unaudited Condensed Consolidated Statements of Financial Condition . These securities are stated at fair value with unrealized gains and losses included in Accumulated Other Comprehensive Income (Loss) and realized gains and losses included in earnings. The Company had net realized gains (losses) of $9 and ($26) for the three and nine months ended September 30, 2018 , respectively, and ($26) for the nine months ended September 30, 2017. Securities Investments - Equity Securities Securities Investments - Equity Securities are carried at fair value with changes in fair value recorded in Other Revenue, Including Interest and Investments, beginning on January 1, 2018, on the Unaudited Condensed Consolidated Statements of Operations. The Company had net realized and unrealized gains (losses) of $114 and ($92) for the three and nine months ended September 30, 2018 , respectively, and $32 and ($43) for the three and nine months ended September 30, 2017 , respectively. Debt Securities Carried by EGL EGL invests in a fixed income portfolio consisting primarily of treasury bills and municipal bonds. These securities are carried at fair value, with changes in fair value recorded in Other Revenue, Including Interest and Investments, on the Unaudited Condensed Consolidated Statements of Operations , as required for broker-dealers in securities. The Company had net realized and unrealized losses of ($207) and ($242) for the three and nine months ended September 30, 2018 , respectively, and ($340) and ($707) for the three and nine months ended September 30, 2017 , respectively. Investment Funds The Company invests in a portfolio of exchange-traded funds and mutual funds as an economic hedge against the Company's deferred cash compensation program. See Note 15 for further information. These securities are carried at fair value, with changes in fair value recorded in Other Revenue, Including Interest and Investments, on the Unaudited Condensed Consolidated Statements of Operations . The Company had net realized and unrealized gains of $3,004 and $4,120 for the three and nine months ended September 30, 2018 , respectively, and $1,013 and $2,570 for the three and nine months ended September 30, 2017 , respectively. Certificates of Deposit At September 30, 2018, the Company held certificates of deposit of $100,000 with a bank with original maturities of six months or less when purchased. At December 31, 2017, the Company held certificates of deposit of $63,527 with certain banks with original maturities of six months or less when purchased, which matured during the first quarter of 2018.

Financial Instruments Owned and

Financial Instruments Owned and Pledged as Collateral at Fair Value, Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase	9 Months Ended
	Sep. 30, 2018
Banking and Thrift [Abstract]
Financial Instruments Owned and Pledged as Collateral at Fair Value, Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase	Financial Instruments Owned and Pledged as Collateral at Fair Value, Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase The Company, through Evercore Casa de Bolsa, S.A. de C.V. ("ECB"), enters into repurchase agreements with clients seeking overnight money market returns whereby ECB transfers to the clients Mexican government securities in exchange for cash and concurrently agrees to repurchase the securities at a future date for an amount equal to the cash exchanged plus a stipulated premium or interest factor. ECB deploys the cash received from, and acquires the securities deliverable to, clients under these repurchase arrangements by purchasing securities in the open market, which the Company reflects as Financial Instruments Owned and Pledged as Collateral at Fair Value on the Unaudited Condensed Consolidated Statements of Financial Condition , or by entering into reverse repurchase agreements with unrelated third parties. The Company accounts for these repurchase and reverse repurchase agreements as collateralized financing transactions, which are carried at their contract amounts, which approximate fair value given that the contracts mature the following business day. The Company records a liability on its Unaudited Condensed Consolidated Statements of Financial Condition in relation to repurchase transactions executed with clients as Securities Sold Under Agreements to Repurchase. The Company records as assets on its Unaudited Condensed Consolidated Statements of Financial Condition , Financial Instruments Owned and Pledged as Collateral at Fair Value (where the Company has acquired the securities deliverable to clients under these repurchase arrangements by purchasing securities in the open market) and Securities Purchased Under Agreements to Resell (where the Company has acquired the securities deliverable to clients under these repurchase agreements by entering into reverse repurchase agreements with unrelated third parties). These Mexican government securities had an estimated average time to maturity of approximately 1.4 years , as of September 30, 2018 , and are pledged as collateral against repurchase agreements. Generally, collateral is posted equal to the contract value at inception and is subject to market changes. These repurchase agreements are primarily with institutional customer accounts managed by ECB and permit the counterparty to pledge the securities. ECB has procedures in place to monitor the daily risk limits for positions taken, as well as the credit risk based on the collateral pledged under these agreements against their contract value from inception to maturity date. The daily risk measure is Value at Risk ("VaR"), which is a statistical measure, at a 98% confidence level, of the potential daily losses from adverse market movements in an ordinary market environment based on a historical simulation using the prior year's historical data. ECB's Risk Management Committee (the "Committee") has established a policy to maintain VaR at levels below 0.1% of the value of the portfolio. If at any point in time the threshold is exceeded, ECB personnel are alerted by an automated interface with ECB's trading systems and begin to make adjustments in the portfolio in order to mitigate the risk and bring the portfolio in compliance. Concurrently, ECB personnel must notify the Committee of the variance and the actions taken to reduce the exposure to loss. In addition to monitoring VaR, ECB periodically performs discrete stress tests ("Stress Tests") to assure that the level of potential losses that would arise from extreme market movements that may not be anticipated by VaR measures are within acceptable levels. As of September 30, 2018 and December 31, 2017 , a summary of the Company's assets, liabilities and collateral received or pledged related to these transactions was as follows: September 30, 2018 December 31, 2017 Asset (Liability) Balance Market Value of Collateral Received or (Pledged) Asset (Liability) Balance Market Value of Collateral Received or (Pledged) Assets Financial Instruments Owned and Pledged as Collateral at Fair Value $ 22,493 $ 19,374 Securities Purchased Under Agreements to Resell 3,616 $ 3,622 10,645 $ 10,643 Total Assets $ 26,109 $ 30,019 Liabilities Securities Sold Under Agreements to Repurchase $ (26,130 ) $ (26,133 ) $ (30,027 ) $ (30,020 )

Investments

Investments	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Investments	Investments The Company's investments reported on the Unaudited Condensed Consolidated Statements of Financial Condition consist of investments in unconsolidated affiliated companies, other investments in private equity partnerships, an equity security in a private company and investments in G5, Glisco Manager Holdings LP and Trilantic Capital Partners ("Trilantic"). The Company's investments are relatively high-risk and illiquid assets. The Company's investments in ABS Investment Management Holdings LP and ABS Investment Management GP LLC (collectively, "ABS"), Atalanta Sosnoff Capital, LLC ("Atalanta Sosnoff"), Luminis Partners ("Luminis") and G5 are in voting interest entities. The Company's share of earnings (losses) on these investments (through December 31, 2017 for G5, the date the Company exchanged all of its outstanding equity interests for debentures of G5) are included within Income from Equity Method Investments on the Unaudited Condensed Consolidated Statements of Operations . The Company also has investments in private equity partnerships which consist of investment interests in private equity funds which are voting interest entities. Realized and unrealized gains and losses on the private equity investments are included within Other Revenue, Including Interest and Investments. Equity Method Investments A summary of the Company's investments accounted for under the equity method of accounting as of September 30, 2018 and December 31, 2017 was as follows: September 30, 2018 December 31, 2017 ABS $ 37,634 $ 39,894 Atalanta Sosnoff 13,393 13,963 Luminis 6,296 5,999 Total $ 57,323 $ 59,856 ABS On December 29, 2011, the Company made an investment accounted for under the equity method of accounting in ABS Investment Management, LLC. Effective as of September 1, 2018, ABS Investment Management, LLC underwent an internal reorganization pursuant to which the Company contributed its ownership interest in ABS Investment Management, LLC to ABS in exchange for substantially equivalent ownership interests in ABS. At September 30, 2018 , the Company's economic ownership interest in ABS was 46% . This investment resulted in earnings of $1,997 and $5,760 for the three and nine months ended September 30, 2018 , respectively, and $1,676 and $4,919 for the three and nine months ended September 30, 2017 , respectively, included within Income from Equity Method Investments on the Unaudited Condensed Consolidated Statements of Operations . Atalanta Sosnoff On December 31, 2015, the Company amended the Operating Agreement with Atalanta Sosnoff and deconsolidated its assets and liabilities, accounting for its interest under the equity method of accounting from that date forward. At September 30, 2018 , the Company's economic ownership interest in Atalanta Sosnoff was 49% . This investment resulted in earnings of $301 and $785 for the three and nine months ended September 30, 2018 , respectively, and $190 and $621 for the three and nine months ended September 30, 2017 , respectively, included within Income from Equity Method Investments on the Unaudited Condensed Consolidated Statements of Operations . Luminis On January 1, 2017, the Company acquired a 19% interest in Luminis and accounted for its interest under the equity method of accounting. This investment resulted in earnings of $297 for the nine months ended September 30, 2018 and $54 and $111 for the three and nine months ended September 30, 2017 , respectively, included within Income from Equity Method Investments on the Unaudited Condensed Consolidated Statements of Operations . Other The Company allocates the purchase price of its equity method investments, in part, to the inherent finite-lived identifiable intangible assets of the investees. The Company's share of the earnings of the investees has been reduced by the amortization of these identifiable intangible assets of $223 and $669 for the three and nine months ended September 30, 2018 , respectively, and $391 and $1,172 for the three and nine months ended September 30, 2017 , respectively. The Company assesses its equity method investments for impairment annually, or more frequently if circumstances indicate impairment may have occurred. Debt Security Investment On December 31, 2017, the Company exchanged all of its outstanding equity interests in G5 for debentures of G5. The Company recorded its investment in G5 as a held-to-maturity debt security of $10,995 within Investments on the Unaudited Condensed Consolidated Statement of Financial Condition as of December 31, 2017, representing the fair value of the debentures at the date of the exchange. The securities are mandatorily redeemable on December 31, 2027, or earlier, subject to the occurrence of certain events. The Company will accrete its investment to its redemption value ratably, or on an accelerated basis if certain revenue thresholds are met by G5, from December 31, 2017 to December 31, 2027. This investment is subject to currency translation from Brazilian Real to the U.S. Dollar, included in Other Revenue, Including Interest and Investments, on the Unaudited Condensed Consolidated Statements of Operations . This investment had a balance of $9,305 as of September 30, 2018. Investments in Private Equity Private Equity Funds The Company's investments related to private equity partnerships and associated entities include investments in Evercore Capital Partners II, L.P. ("ECP II"), Glisco Partners II, L.P. ("Glisco II"), Glisco Partners III, L.P. ("Glisco III"), Glisco Capital Partners IV ("Glisco IV"), Trilantic Capital Partners Associates IV, L.P. ("Trilantic IV") and Trilantic Capital Partners V, L.P. ("Trilantic V"). Portfolio holdings of the private equity funds are carried at fair value. Accordingly, the Company reflects its pro rata share of unrealized gains and losses occurring from changes in fair value. Additionally, the Company reflects its pro rata share of realized gains, losses and carried interest associated with any investment realizations. During 2018, the Company made an investment of $45 in Glisco IV, the general partner of Glisco Partners IV, L.P. On December 31, 2014, ECP II was terminated. The Company's investment at September 30, 2018 of $796 is comprised of its remaining interest in the general partner, including $788 in cash and $8 in securities. A summary of the Company's investment in the private equity funds as of September 30, 2018 and December 31, 2017 was as follows: September 30, 2018 December 31, 2017 ECP II $ 796 $ 833 Glisco II, Glisco III and Glisco IV 3,713 6,558 Trilantic IV and Trilantic V 5,201 6,421 Total Private Equity Funds $ 9,710 $ 13,812 Net realized and unrealized gains (losses) on private equity fund investments were ($337) and ($195) for the three and nine months ended September 30, 2018 , respectively, and $1,208 and ($985) for the three and nine months ended September 30, 2017 , respectively. During the nine months ended September 30, 2018 , Glisco II, Trilantic IV and Trilantic V made distributions of $2,059 , $194 and $1,549 , respectively. In the event the funds perform poorly, the Company may be obligated to repay certain carried interest previously distributed. As of September 30, 2018 , there was no previously distributed carried interest received from the Company's managed funds that was subject to repayment. General Partners of Private Equity Funds which are VIEs The Company has concluded that Evercore Partners II, L.L.C. ("EP II L.L.C."), the general partner of ECP II, is a VIE pursuant to ASC 810. The Company owned 8% - 9% of the carried interest earned by the general partner of ECP II. The Company's assessment of the design of EP II L.L.C. resulted in the determination that the Company is not acting as an agent for other members of the general partner and is a passive holder of interests in the fund, evidenced by the fact that the Company is a non-voting, non-managing member of the general partner and, therefore, has no authority in directing the management operations of the general partner. Furthermore, the Company does not have the obligation to absorb significant losses or the right to receive benefits that could potentially have a significant impact to EP II L.L.C. Accordingly, the Company has concluded that it is not the primary beneficiary of EP II L.L.C. and has not consolidated EP II L.L.C. in the Company's unaudited condensed consolidated financial statements . Following the Glisco transaction, the Company concluded that Glisco Capital Partners II, Glisco Capital Partners III and Glisco Manager Holdings LP are VIEs and that the Company is not the primary beneficiary of these VIEs. The Company's assessment of the primary beneficiary of these entities included assessing which parties have the power to significantly impact the economic performance of these entities and the obligation to absorb losses, which could be potentially significant to the entities, or the right to receive benefits from the entities that could be potentially significant. Neither the Company nor its related parties will have the ability to make decisions that significantly impact the economic performance of these entities. Further, as a limited partner in these entities, the Company does not possess substantive participating rights. The Company had assets of $5,277 and $8,730 included in its Unaudited Condensed Consolidated Statements of Financial Condition at September 30, 2018 and December 31, 2017, respectively, related to these unconsolidated VIEs, representing the carrying value of the Company's investments in the entities. The Company's exposure to the obligations of these VIEs is generally limited to its investments in these entities. The Company's maximum exposure to loss as of September 30, 2018 and December 31, 2017 was $7,880 and $10,996 , respectively, which represents the carrying value of the Company's investments in these VIEs, as well as any unfunded commitments to the current and future funds. Investment in Trilantic Capital Partners In 2010, the Company made a limited partnership investment in Trilantic in exchange for 500 Class A limited partnership units of Evercore LP ("Class A LP Units") having a fair value of $16,090 . This investment gave the Company the right to invest in Trilantic's current and future private equity funds, beginning with Trilantic Fund IV. The Company accounts for this investment at its cost minus impairment, if any, plus or minus changes resulting from observable price changes. The Company allocates the cost of this investment to its investments in current and future Trilantic funds as the Company satisfies the capital calls of these funds. The Company bases this allocation on its expectation of Trilantic's future fundraising ability and performance. During the nine months ended September 30, 2018, $417 of this investment was allocated to Trilantic Fund V. From 2010 to 2017, $4,513 and $1,178 of this investment was allocated to Trilantic Fund V and IV, respectively. This investment had a balance of $9,982 and $10,399 as of September 30, 2018 and December 31, 2017, respectively. The Company has a $5,000 commitment to invest in Trilantic Fund V, of which $632 was unfunded at September 30, 2018 . The Company and Trilantic anticipate that the Company will participate in the successor funds to Trilantic Fund V. The Company further anticipates that participation in the successor fund will be at approximately $12,000 . Other Investments In 2015, the Company received an equity security in a private company in exchange for advisory services. This investment is accounted for at its cost minus impairment, if any, plus or minus changes resulting from observable price changes and had a balance of $1,079 as of September 30, 2018 and December 31, 2017. Following the Glisco transaction in 2016, the Company recorded an investment in Glisco Manager Holdings LP representing the fair value of the deferred consideration resulting from this transaction. This investment is accounted for at its cost minus impairment, if any, plus or minus changes resulting from observable price changes. The Company amortizes the balance of its investment as distributions are received related to the deferred consideration. This investment had a balance of $1,609 and $2,172 as of September 30, 2018 and December 31, 2017, respectively.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements ASC 820 establishes a hierarchical disclosure framework which prioritizes and ranks the level of market price observability used in measuring investments at fair value. Market price observability is affected by a number of factors, including the type of investment and the characteristics specific to the investment. Investments with readily-available active quoted prices or for which fair value can be measured from actively quoted prices generally will have a higher degree of market price observability and a lesser degree of judgment used in measuring fair value. Investments measured and reported at fair value are classified and disclosed in one of the following categories: Level I – Quoted prices are available in active markets for identical investments as of the reporting date. The type of investments included in Level I include listed equities, listed derivatives and treasury bills. As required by ASC 820, the Company does not adjust the quoted price for these investments, even in situations where the Company holds a large position and a sale could reasonably impact the quoted price. Level II – Pricing inputs are other than quoted prices in active markets, which are either directly or indirectly observable as of the reporting date, and fair value is determined through the use of models or other valuation methodologies. The estimated fair values of the Corporate Bonds, Municipal Bonds, Other Debt Securities and Securities Investments held at September 30, 2018 and December 31, 2017 are based on prices provided by external pricing services. Level III – Pricing inputs are unobservable for the investment and includes situations where there is little, if any, market activity for the investment. The inputs into the determination of fair value require significant management judgment or estimation. The following table presents the categorization of investments and certain other financial assets measured at fair value on a recurring basis as of September 30, 2018 and December 31, 2017 : September 30, 2018 Level I Level II Level III Total Corporate Bonds, Municipal Bonds and Other Debt Securities (1) $ 112,361 $ 56,660 $ — $ 169,021 Securities Investments (2) 6,342 1,942 — 8,284 Investment Funds 63,652 — — 63,652 Financial Instruments Owned and Pledged as Collateral at Fair Value 22,493 — — 22,493 Total Assets Measured At Fair Value $ 204,848 $ 58,602 $ — $ 263,450 December 31, 2017 Level I Level II Level III Total Corporate Bonds, Municipal Bonds and Other Debt Securities (1) $ — $ 44,648 $ — $ 44,648 Securities Investments (2) 4,336 1,795 — 6,131 Investment Funds 27,699 — — 27,699 Financial Instruments Owned and Pledged as Collateral at Fair Value 19,374 — — 19,374 Total Assets Measured At Fair Value $ 51,409 $ 46,443 $ — $ 97,852 (1) Includes $23,194 and $10,354 of treasury bills, municipal bonds and commercial paper classified within Cash and Cash Equivalents on the Unaudited Condensed Consolidated Statements of Financial Condition as of September 30, 2018 and December 31, 2017 , respectively. (2) Includes $6,635 and $3,092 of treasury bills and notes and municipal bonds classified within Cash and Cash Equivalents on the Unaudited Condensed Consolidated Statements of Financial Condition as of September 30, 2018 and December 31, 2017 , respectively. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The Company's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. The Company had no transfers between fair value levels during the nine months ended September 30, 2018 or the year ended December 31, 2017. The carrying amount and estimated fair value of the Company's financial instrument assets and liabilities, which are not measured at fair value on the Unaudited Condensed Consolidated Statements of Financial Condition , are listed in the tables below. September 30, 2018 Carrying Estimated Fair Value Amount Level I Level II Level III Total Financial Assets: Cash and Cash Equivalents $ 395,323 $ 395,323 $ — $ — $ 395,323 Certificates of Deposit 100,000 — 100,000 — 100,000 Debt Security Investment 9,305 — — 9,305 9,305 Securities Purchased Under Agreements to Resell 3,616 — 3,616 — 3,616 Accounts Receivable 232,256 — 232,256 — 232,256 Receivable from Employees and Related Parties 23,872 — 23,872 — 23,872 Closely-held Equity Security 1,079 — — 1,079 1,079 Financial Liabilities: Accounts Payable and Accrued Expenses $ 41,669 $ — $ 41,669 $ — $ 41,669 Securities Sold Under Agreements to Repurchase 26,130 — 26,130 — 26,130 Payable to Employees and Related Parties 34,167 — 34,167 — 34,167 Notes Payable 168,543 — 163,476 — 163,476 December 31, 2017 Carrying Estimated Fair Value Amount Level I Level II Level III Total Financial Assets: Cash and Cash Equivalents $ 596,141 $ 596,141 $ — $ — $ 596,141 Certificates of Deposit 63,527 — 63,527 — 63,527 Debt Security Investment 10,995 — — 10,995 10,995 Securities Purchased Under Agreements to Resell 10,645 — 10,645 — 10,645 Accounts Receivable 184,993 — 184,993 — 184,993 Receivable from Employees and Related Parties 17,030 — 17,030 — 17,030 Closely-held Equity Security 1,079 — — 1,079 1,079 Financial Liabilities: Accounts Payable and Accrued Expenses $ 34,111 $ — $ 34,111 $ — $ 34,111 Securities Sold Under Agreements to Repurchase 30,027 — 30,027 — 30,027 Payable to Employees and Related Parties 31,167 — 31,167 — 31,167 Notes Payable 168,347 — 171,929 — 171,929 Subordinated Borrowings 6,799 — 6,859 — 6,859

Notes Payable and Subordinated

Notes Payable and Subordinated Borrowings	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Notes Payable and Subordinated Borrowings	Notes Payable and Subordinated Borrowings On March 30, 2016, the Company issued an aggregate of $170,000 of senior notes, including: $38,000 aggregate principal amount of its 4.88% Series A senior notes due 2021 (the "Series A Notes"), $67,000 aggregate principal amount of its 5.23% Series B senior notes due 2023 (the "Series B Notes"), $48,000 aggregate principal amount of its 5.48% Series C senior notes due 2026 (the "Series C Notes") and $17,000 aggregate principal amount of its 5.58% Series D senior notes due 2028 (the "Series D Notes" and together with the Series A Notes, the Series B Notes and the Series C Notes, the "Private Placement Notes"), pursuant to a note purchase agreement (the "Note Purchase Agreement") dated as of March 30, 2016, among the Company and the purchasers party thereto in a private placement exempt from registration under the Securities Act of 1933. Interest on the Private Placement Notes is payable semi-annually and the Private Placement Notes are guaranteed by certain of the Company's domestic subsidiaries. The Company may, at its option, prepay all, or from time to time any part of, the Private Placement Notes (without regard to Series), in an amount not less than 5% of the aggregate principal amount of the Private Placement Notes then outstanding at 100% of the principal amount thereof plus an applicable "make-whole amount." Upon the occurrence of a change of control, the holders of the Private Placement Notes will have the right to require the Company to prepay the entire unpaid principal amounts held by each holder of the Private Placement Notes plus accrued and unpaid interest to the prepayment date. The Note Purchase Agreement contains customary covenants, including financial covenants requiring compliance with a maximum leverage ratio, a minimum tangible net worth and a minimum interest coverage ratio, and customary events of default. As of September 30, 2018 , the Company was in compliance with all of these covenants. The Company used $120,000 of the net proceeds from the Private Placement Notes to repay outstanding borrowings under the senior credit facility with Mizuho Bank, Ltd. ("Mizuho") on March 30, 2016 and used the remaining net proceeds for general corporate purposes. Notes Payable is comprised of the following as of September 30, 2018 and December 31, 2017 : Carrying Value (a) Note Maturity Date Effective Annual Interest Rate September 30, 2018 December 31, 2017 Evercore Inc. 4.88% Series A Senior Notes 3/30/2021 5.16 % $ 37,752 $ 37,684 Evercore Inc. 5.23% Series B Senior Notes 3/30/2023 5.44 % 66,437 66,356 Evercore Inc. 5.48% Series C Senior Notes 3/30/2026 5.64 % 47,530 47,493 Evercore Inc. 5.58% Series D Senior Notes 3/30/2028 5.72 % 16,824 16,814 Total $ 168,543 $ 168,347 (a) Carrying value has been adjusted to reflect the presentation of debt issuance costs as a direct reduction from the related liability. The Company had subordinated borrowings, principally with an executive officer of the Company, due on October 31, 2019. These borrowings had a coupon of 5.5% , payable semi-annually. In March 2018, the Company repaid $6,700 of the original borrowings and in May 2018, the Company repaid the remaining $99 of the original borrowings. In February and April 2017, the Company repaid $6,000 and $3,751 , respectively, of the original borrowings. The Company had $6,799 in subordinated borrowings pursuant to these agreements as of December 31, 2017 .

Evercore Inc. Stockholders' Equ

Evercore Inc. Stockholders' Equity	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Evercore Inc. Stockholders' Equity	Evercore Inc. Stockholders' Equity Dividends – The Company's Board of Directors declared on October 22, 2018 , a quarterly cash dividend of $0.50 per share, to the holders of record of shares of Class A common stock ("Class A Shares") as of November 30, 2018 , which will be paid on December 14, 2018 . During the nine months ended September 30, 2018, the Company declared and paid dividends of $1.40 per share, totaling $57,448 , and accrued deferred cash dividends on unvested RSUs, totaling $9,092 . Treasury Stock – During the nine months ended September 30, 2018, the Company purchased 1,060 Class A Shares primarily from employees at values ranging from $89.98 to $115.30 per share (at an average cost per share of $99.92 ), primarily for the net settlement of stock-based compensation awards, and 848 Class A Shares at market values ranging from $85.91 to $112.30 per share (at an average cost per share of $96.05 ) pursuant to the Company's share repurchase program. The aggregate 1,908 Class A Shares were purchased at an average cost per share of $98.20 and the result of these purchases was an increase in Treasury Stock of $187,457 on the Company's Unaudited Condensed Consolidated Statement of Financial Condition as of September 30, 2018 . LP Units – During the nine months ended September 30, 2018, 1,081 LP Units were exchanged for Class A Shares, resulting in an increase to Common Stock and Additional Paid-In-Capital of $11 and $42,555 , respectively, on the Company's Unaudited Condensed Consolidated Statement of Financial Condition as of September 30, 2018 . Accumulated Other Comprehensive Income (Loss) – As of September 30, 2018 , Accumulated Other Comprehensive Income (Loss) on the Company's Unaudited Condensed Consolidated Statement of Financial Condition includes an accumulated Unrealized Gain (Loss) on Marketable Securities and Investments, net and Foreign Currency Translation Adjustment Gain (Loss), net, of ($3,660) and ($25,380) , respectively. The application of ASU 2016-01 resulted in the reclassification of ($2,229) of cumulative unrealized losses, net of tax, on Marketable Securities in Accumulated Other Comprehensive Income (Loss) to Retained Earnings on the Unaudited Condensed Consolidated Statement of Financial Condition as of January 1, 2018. See Note 3 for further information.

Noncontrolling Interest

Noncontrolling Interest	9 Months Ended
	Sep. 30, 2018
Noncontrolling Interest [Abstract]
Noncontrolling Interest	Noncontrolling Interest Noncontrolling Interest recorded in the unaudited condensed consolidated financial statements of the Company relates to the following approximate interests in certain consolidated subsidiaries, which are not owned by the Company: September 30, 2018 2017 Subsidiary: Evercore LP 11 % 13 % Evercore Wealth Management ("EWM") (1) 44 % 43 % PCA (1) 24 % 26 % (1) Noncontrolling Interests represent a blended rate for multiple classes of interests. The Noncontrolling Interests for Evercore LP, EWM and PCA have rights, in certain circumstances, to convert into Class A Shares. Changes in Noncontrolling Interest for the nine months ended September 30, 2018 and 2017 were as follows: For the Nine Months Ended September 30, 2018 2017 Beginning balance $ 252,404 $ 256,033 Comprehensive Income: Net Income Attributable to Noncontrolling Interest 36,760 35,740 Other Comprehensive Income 8 1,264 Total Comprehensive Income 36,768 37,004 Evercore LP Units Purchased or Converted into Class A Shares (42,566 ) (29,393 ) Amortization and Vesting of LP Units/Interests 14,925 7,294 Other Items: Distributions to Noncontrolling Interests (30,374 ) (26,315 ) Issuance of Noncontrolling Interest 1,165 8,279 Purchase of Noncontrolling Interest (1,011 ) (261 ) Other, net — (221 ) Total Other Items (30,220 ) (18,518 ) Ending balance $ 231,311 $ 252,420 Other Comprehensive Income - Other Comprehensive Income attributed to Noncontrolling Interest includes Unrealized Gain (Loss) on Marketable Securities and Investments, net, of ($2) and ($66) for the three and nine months ended September 30, 2018 , respectively, and $5 and $79 for the three and nine months ended September 30, 2017 , respectively, and Foreign Currency Translation Adjustment Gain (Loss), net, of $429 and $74 for the three and nine months ended September 30, 2018 , respectively, and $955 and $1,185 for the three and nine months ended September 30, 2017 , respectively. Interests Issued - During the second quarter of 2018, in conjunction with the establishment of the RECA business, certain employees of that business purchased interests, at fair value, in PCA, resulting in an increase to Noncontrolling Interest of $770 on the Company's Unaudited Condensed Consolidated Statement of Financial Condition as of September 30, 2018. See Note 5 for further information. During the nine months ended September 30, 2017, the Company issued 111 Class A LP Units as settlement of contingent consideration, resulting in an increase to Noncontrolling Interest of $8,169 on the Company's Unaudited Condensed Consolidated Statement of Financial Condition as of September 30, 2017. Interests Purchased - On March 29, 2018, the Company purchased, at fair value, an additional 15% of PCA for $25,525 and on March 3, 2017, the Company purchased, at fair value, an additional 13% of PCA for $7,071 . These purchases resulted in a decrease to Noncontrolling Interest of $298 and $261 and a decrease to Additional Paid-In-Capital of $25,227 and $6,810 , on the Company's Unaudited Condensed Consolidated Statement of Financial Condition as of September 30, 2018 and 2017, respectively. During the nine months ended September 30, 2017, the Company purchased 32 LP Units and certain other rights from noncontrolling interest holders, resulting in a decrease to Noncontrolling Interest of $2,523 on the Company's Unaudited Condensed Consolidated Statement of Financial Condition as of September 30, 2017.

Net Income Per Share Attributab

Net Income Per Share Attributable to Evercore Inc. Common Shareholders	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Net Income Per Share Attributable to Evercore Inc. Common Shareholders	Net Income Per Share Attributable to Evercore Inc. Common Shareholders The calculations of basic and diluted net income per share attributable to Evercore Inc. common shareholders for the three and nine months ended September 30, 2018 and 2017 are described and presented below. For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Basic Net Income Per Share Attributable to Evercore Inc. Common Shareholders Numerator: Net income attributable to Evercore Inc. common shareholders $ 49,461 $ 45,911 $ 213,935 $ 144,866 Denominator: Weighted average Class A Shares outstanding, including vested restricted stock units ("RSUs ") 40,966 39,045 40,762 39,873 Basic net income per share attributable to Evercore Inc. common shareholders $ 1.21 $ 1.18 $ 5.25 $ 3.63 Diluted Net Income Per Share Attributable to Evercore Inc. Common Shareholders Numerator: Net income attributable to Evercore Inc. common shareholders $ 49,461 $ 45,911 $ 213,935 $ 144,866 Noncontrolling interest related to the assumed exchange of LP Units for Class A Shares (b) (b) (b) (b) Associated corporate taxes related to the assumed elimination of Noncontrolling Interest described above (b) (b) (b) (b) Diluted net income attributable to Evercore Inc. common shareholders $ 49,461 $ 45,911 $ 213,935 $ 144,866 Denominator: Weighted average Class A Shares outstanding, including vested RSUs 40,966 39,045 40,762 39,873 Assumed exchange of LP Units for Class A Shares (a)(b) 1,297 1,420 1,405 473 Additional shares of the Company's common stock assumed to be issued pursuant to non-vested RSUs and deferred consideration, as calculated using the Treasury Stock Method 3,195 2,590 2,975 2,509 Shares that are contingently issuable (c) 400 981 400 2,032 Diluted weighted average Class A Shares outstanding 45,858 44,036 45,542 44,887 Diluted net income per share attributable to Evercore Inc. common shareholders $ 1.08 $ 1.04 $ 4.70 $ 3.23 (a) The Company has outstanding Class J limited partnership units of Evercore LP ("Class J LP Units"), which convert into Class E limited partnership units of Evercore LP ("Class E LP Units") and ultimately become exchangeable into Class A Shares on a one -for-one basis. During the three and nine months ended September 30, 2018 and 2017, the Class J LP Units were dilutive and consequently the effect of their exchange into Class A Shares has been included in the calculation of diluted net income per share attributable to Evercore Inc. common shareholders under the if-converted method. In computing this adjustment, the Company assumes that all Class J LP Units are converted into Class A Shares. (b) The Company also has outstanding Class A and E LP Units in Evercore LP, which give the holders the right to receive Class A Shares upon exchange on a one -for-one basis. During the three and nine months ended September 30, 2018 and 2017, the Class A and E LP Units were antidilutive and consequently the effect of their exchange into Class A Shares has been excluded from the calculation of diluted net income per share attributable to Evercore Inc. common shareholders. The units that would have been included in the denominator of the computation of diluted net income per share attributable to Evercore Inc. common shareholders if the effect would have been dilutive were 5,018 and 5,125 for the three and nine months ended September 30, 2018 , respectively, and 5,930 and 6,010 for the three and nine months ended September 30, 2017 , respectively. The adjustment to the numerator, diluted net income attributable to Class A common shareholders, if the effect would have been dilutive, would have been $6,423 and $26,881 for the three and nine months ended September 30, 2018 , respectively, and $6,628 and $20,746 for the three and nine months ended September 30, 2017 , respectively. In computing this adjustment, the Company assumes that all vested Class A LP Units and all Class E LP Units are converted into Class A Shares, that all earnings attributable to those shares are attributed to Evercore Inc. and, that the Company is subject to the statutory tax rates of a C-Corporation under a conventional corporate tax structure in the U.S. at prevailing corporate tax rates. The Company does not anticipate that the Class A and E LP Units will result in a dilutive computation in future periods. (c) The Company previously had outstanding Class G and H limited partnership interests of Evercore LP ("Class G and H LP Interests") which were contingently exchangeable into Class E LP Units, and ultimately Class A Shares, and has outstanding Class I-P units of Evercore LP ("Class I-P Units") which are contingently exchangeable into Class I limited partnership units of Evercore LP ("Class I LP Units"), and ultimately Class A Shares, and outstanding Class K-P units of Evercore LP ("Class K-P Units") which are contingently exchangeable into Class K limited partnership units of Evercore LP ("Class K LP Units"), and ultimately Class A Shares, as they are subject to certain performance thresholds being achieved. In July 2017, the Company exchanged all of the outstanding Class H LP Interests for a number of Class J LP Units. As of December 31, 2017, all of the Class G LP Interests either converted into Class E LP Units or were forfeited pursuant to their performance terms. See Note 15 for further discussion. For the purposes of calculating diluted net income per share attributable to Evercore Inc. common shareholders, the Company's Class G and H LP Interests and Class I-P and Class K-P Units are included in diluted weighted average Class A Shares outstanding as of the beginning of the period in which all necessary performance conditions have been satisfied. If all necessary performance conditions have not been satisfied by the end of the period, the number of shares that are included in diluted weighted average Class A Shares outstanding is based on the number of shares that would be issuable if the end of the reporting period were the end of the performance period. The Interests/Units that were assumed to be converted to an equal number of Class A Shares for purposes of computing diluted net income per share attributable to Evercore Inc. common shareholders were 400 for the three and nine months ended September 30, 2018 and 981 and 2,032 for the three and nine months ended September 30, 2017 , respectively. The shares of Class B common stock have no right to receive dividends or a distribution on liquidation or winding up of the Company. The shares of Class B common stock do not share in the earnings of the Company and no earnings are allocable to such class. Accordingly, basic and diluted net income per share of Class B common stock have not been presented.

Share-Based and Other Deferred

Share-Based and Other Deferred Compensation	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based and Other Deferred Compensation	Share-Based and Other Deferred Compensation LP Units Equities business - In conjunction with the acquisition of the operating businesses of International Strategy & Investment ("ISI") in 2014, the Company issued Evercore LP units and interests which have been treated as compensation, including 710 vested Class E LP Units and an allocation of the value, attributed to post-combination service, of 710 Class E LP Units that vested ratably on October 31, 2015, 2016 and 2017 and became exchangeable into Class A Shares upon vesting, subject to certain liquidated damages and continued employment provisions. Compensation expense related to Class E LP Units was $4,835 and $15,273 for the three and nine months ended September 30, 2017 , respectively. The Class E LP Units were fully expensed at December 31, 2017. The Company also issued 538 vested and 540 unvested Class G LP Interests, which vested ratably and became exchangeable into Class A Shares of the Company in February 2016, 2017 and 2018 if certain earnings before interest and taxes, excluding underwriting, ("Management Basis EBIT") margin thresholds within a range of 12% to 16% , were achieved for the calendar year preceding the date the interests become exchangeable. In the event of death, disability or termination of employment without cause, unvested Class G LP Interests could be canceled or vest based on determination of expected performance, based on a decision by Management. As of December 31, 2017, all of the Class G LP Interests either converted into Class E LP Units or were forfeited pursuant to their performance terms. In addition, in conjunction with the acquisition of ISI, the Company also issued 2,044 vested and 2,051 unvested Class H LP Interests, which would have vested ratably on February 15, 2018, 2019 and 2020. Subject to continued employment, the Company's vested Class H LP Interests would have become exchangeable in February 2018, 2019 and 2020, if certain average Management Basis EBIT and Management Basis EBIT margin thresholds, within ranges of $8,000 to $48,000 and 7% to 17% , respectively, were achieved for the three calendar years preceding the date the interests become exchangeable. In the event of death, disability or termination of employment without cause, unvested Class H LP Interests could be canceled or vest based on determination of expected performance, based on a decision by Management. In July 2017, the Company exchanged all of the outstanding 4,148 Class H LP Interests for 1,012 vested ( 963 of which are subject to certain liquidated damages and continued employment provisions) and 938 unvested Class J LP Units. These units convert into an equal amount of Class E LP Units, and become exchangeable into Class A Shares of the Company, ratably on February 15, 2018, 2019 and 2020. These Class J LP Units have the same vesting and delivery schedule, acceleration and forfeiture triggers, and distribution rights as the Class H LP Interests. In connection with this exchange, one share of Class B common stock has been issued to each holder of Class J LP Units, which entitles each holder to one vote on all matters submitted generally to holders of Class A and Class B common stock for each Class E LP Unit and Class J LP Unit held. As the number of Class J LP Units exchanged was within the number of Class H LP Interests that the Company determined were probable of being exchanged on the date of modification, the Company is expensing the previously unrecognized grant date fair value of the Class H LP Interests ratably over the remaining vesting period of the Class J LP Units. Compensation expense related to the Class J LP Units was $3,741 and $11,313 for the three and nine months ended September 30, 2018 , respectively, and $2,315 for the three and nine months ended September 30, 2017 . Based on Evercore ISI's results for the first nine months of 2017, as well as the Company's revised outlook for the Evercore ISI business, including strategic decisions to increase the compensation ratio for this business, the Company determined that the achievement of the remaining performance thresholds for certain of the Class G LP Interests was no longer probable at March 31, 2017, June 30, 2017 or September 30, 2017. Prior to the exchange into Class J LP Units in 2017, the Company had determined that the achievement of the remaining performance thresholds for certain of the Class H LP Interests was probable at June 30, 2017, but at a lower assumed performance level than previously determined. These determinations resulted in previously recognized expense of $26,224 for certain of the Class G and H LP Interests being reversed during the first quarter of 2017. The determination assumed a Management Basis EBIT margin of 11.7% and an annual Management Basis EBIT of $26,904 being achieved in 2017 and a Management Basis EBIT margin of 14.0% and an annual Management Basis EBIT of $34,357 being achieved in 2018 and 2019 for Evercore ISI, which would have resulted in 2,005 Class H LP Interests vesting and becoming exchangeable into Class E LP Units. Accordingly, $2,003 of expense was recorded and $12,897 of expense was reversed for the three and nine months ended September 30, 2017, respectively, for the Class G and H LP Interests. During the first quarter of 2017, the Company amended the terms of 19 Class E LP Units, 14 Class G LP Interests and 162 Class H LP Interests for an exiting employee. The amendment resulted in expense, included within compensation expense related to the Class E LP Units and Class G and H LP Interests above, of $3,532 for the nine months ended September 30, 2017, respectively, reflecting the reversal of all previous expense related to these awards and the subsequent amortization of the awards at the amended grant date fair value of $14,891 . These awards were amortized ratably through June 30, 2017. Othe r Performance-based Awards - In November 2016, the Company issued 400 Class I-P Units in conjunction with the appointment of the Executive Chairman. These Class I-P Units convert into a specified number of Class I LP Units, which are exchangeable on a one -for-one basis to Class A Shares, contingent on the achievement of certain market and service conditions, subject to vesting upon specified termination events (including retirement, upon satisfying certain eligibility criteria, on or following January 15, 2022, subject to a one year prior written notice requirement) or a change in control. These Class I-P Units are segregated into two groups of 200 units each, with share price threshold vesting conditions which are required to exceed a certain level for 20 consecutive trading days (which were met as of March 31, 2017). The Company determined the fair value of the award to be $24,412 and is expensing the award ratably over the implied service period, which ends on March 1, 2022. As the award contains market-based conditions, the entire expense will be recognized if the award does not vest for any reason other than the service conditions. Compensation expense related to this award was $1,164 and $3,455 for the three and nine months ended September 30, 2018 and 2017, respectively. In November 2017, the Company issued 64 Class K-P Units to an employee of the Company. These Class K-P Units convert into a specified number of Class K LP Units, which are exchangeable on a one -for-one basis to Class A Shares, contingent upon the achievement of certain defined benchmark results and continued service through December 31, 2021. An additional 16 Class K-P Units may be issued contingent upon the achievement of certain defined benchmark results and continued service through December 31, 2021. The Company determined the fair value of the award probable to vest to be $5,000 and records expense for these units over the service period. Compensation expense related to this award was $302 and $897 for the three and nine months ended September 30, 2018 , respectively. Stock Incentive Plan During 2016, the Company's stockholders approved the Amended and Restated 2016 Evercore Inc. Stock Incentive Plan (the "2016 Plan"). The 2016 Plan, among other things, authorizes an additional 10,000 shares of the Company's Class A Shares. The 2016 Plan permits the Company to grant to key employees, directors and consultants incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock, RSUs and other awards based on the Company's Class A Shares. The Company intends to use newly-issued Class A Shares to satisfy any awards under the 2016 Plan and its predecessor plan. Class A Shares underlying any award granted under the 2016 Plan that expire, terminate or are canceled or satisfied for any reason without being settled in stock again become available for awards under the plans. The total shares available to be granted in the future under the 2016 Plan was 5,367 and 7,412 as of September 30, 2018 and 2017, respectively. The Company also grants, at its discretion, dividend equivalents, in the form of unvested RSU awards, or deferred cash dividends, concurrently with the payment of dividends to the holders of Class A Shares, on all unvested RSU grants awarded in conjunction with annual bonuses, as well as new hire awards. The dividend equivalents have the same vesting and delivery terms as the underlying RSU award. The Company estimates forfeitures in the aggregate compensation cost to be amortized over the requisite service period of its awards. The Company periodically monitors its estimated forfeiture rate and adjusts its assumptions to the actual occurrence of forfeited awards. A change in estimated forfeitures is recognized through a cumulative adjustment in the period of the change. Equity Grants During the nine months ended September 30, 2018 , pursuant to the 2016 Plan, the Company granted employees 1,932 RSUs that are Service-based Awards. Service-based Awards granted during the nine months ended September 30, 2018 had grant date fair values of $86.23 to $114.80 per share. During the nine months ended September 30, 2018, 2,472 Service-based Awards vested and 51 Service-based Awards were forfeited. Compensation expense related to Service-based Awards, including RSUs granted to the Executive Chairman in November 2016, was $41,679 and $130,785 for the three and nine months ended September 30, 2018 , respectively, and $38,124 and $116,363 for the three and nine months ended September 30, 2017 , respectively. Deferred Cash The Company's deferred cash compensation program provides participants the ability to elect to receive a portion of their deferred compensation in cash, which is indexed to a notional investment portfolio and vests ratably over four years and requires payment upon vesting. The Company granted $82,592 , $3,750 and $41,147 of deferred cash awards pursuant to the deferred cash compensation program during the first quarter of 2018 and the years ended December 31, 2017 and 2016, respectively. In November 2016, the Company granted a restricted cash award in conjunction with the appointment of the Executive Chairman with a target payment amount of $35,000 , of which $11,000 is scheduled to vest on March 1, 2019 and $6,000 is scheduled to vest on each of the first four anniversaries of March 1, 2019, provided that the Executive Chairman continues to remain employed through each such vesting date, subject to vesting upon specified termination events (including retirement, upon satisfying certain eligibility criteria, on or following May 1, 2019, subject to a six month prior written notice requirement) or a change in control. The Company has the discretion to increase (by an amount up to $35,000 ) or decrease (by an amount up to $8,750 ) the total amount payable under this award. In 2017, the Company granted deferred cash awards of $29,500 to certain employees. These awards vest in five equal installments over the period ending June 30, 2022, subject to continued employment. The Company records expense for these awards ratably over the vesting period. Compensation expense related to deferred cash awards was $13,147 and $41,328 for the three and nine months ended September 30, 2018 , respectively, and $8,599 and $18,419 for the three and nine months ended September 30, 2017 , respectively. Long-term Incentive Plan The Company's Long-term Incentive Plan provides for incentive compensation awards to Advisory Senior Managing Directors, excluding executive officers of the Company, who exceed defined benchmark results over four -year performance periods beginning January 1, 2013 and January 1, 2017. These awards, which aggregate $63,225 of liabilities on the Unaudited Condensed Consolidated Statement of Financial Condition as of September 30, 2018 , are due to be paid, in cash or Class A Shares, at the Company's discretion, in three equal installments in the first quarter of 2017, 2018 and 2019 (for the performance period beginning on January 1, 2013) and in the first quarter of 2021, 2022 and 2023 (for the performance period beginning on January 1, 2017), subject to employment at the time of payment. These awards are subject to retirement eligibility requirements. The Company periodically assesses the probability of the benchmarks being achieved and expenses the probable payout over the requisite service period of the award. The compensation expense related to these awards was $7,007 and $21,082 for the three and nine months ended September 30, 2018 , respectively, and $6,721 and $19,279 for the three and nine months ended September 30, 2017 , respectively. In conjunction with this plan, the Company distributed cash payments of $4,532 and $19,401 for the nine months ended September 30, 2018 and 2017, respectively. Employee Loans Receivable Periodically, the Company provides new and existing employees with cash payments in the form of loans and/or other cash awards which are subject to ratable vesting terms with service requirements ranging from one to five years and in certain circumstances, subject to the achievement of performance requirements. Generally, the terms of these awards include a requirement of either full or partial repayment of these awards based on the terms of their employment agreements with the Company. In circumstances where the employee meets the Company's minimum credit standards, the Company amortizes these awards to compensation expense over the relevant service period which is generally the period they are subject to forfeiture. Compensation expense related to these awards was $5,701 and $13,810 for the three and nine months ended September 30, 2018 , respectively, and $5,021 and $14,050 for the three and nine months ended September 30, 2017 , respectively. The remaining unamortized amount of these awards was $39,408 as of September 30, 2018 . Separation and Transition Benefits The Company granted separation benefits to certain employees, resulting in expense included in Employee Compensation and Benefits of approximately $538 and $7,022 for the three and nine months ended September 30, 2018 , respectively, and $953 and $4,421 for the three and nine months ended September 30, 2017 , respectively. In conjunction with these arrangements, the Company distributed cash payments of $763 and $6,636 for the three and nine months ended September 30, 2018 , respectively, and $54 and $2,399 for the three and nine months ended September 30, 2017 , respectively. The Company also granted separation benefits to certain employees, resulting in expense included in Special Charges of approximately $781 and $2,024 for the three and nine months ended September 30, 2018 , respectively. See Note 5 for further information.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies For a further discussion of the Company's commitments, refer to the Company's Annual Report on Form 10-K for the year ended December 31, 2017. Operating Leases – The Company leases office space under non-cancelable lease agreements, which expire on various dates through 2034 . The Company reflects lease expense over the lease terms on a straight-line basis. Occupancy lease agreements, in addition to base rentals, generally are subject to escalation provisions based on certain costs incurred by the landlord. Occupancy and Equipment Rental on the Unaudited Condensed Consolidated Statements of Operations includes occupancy rental expense relating to operating leases of $11,470 and $32,042 for the three and nine months ended September 30, 2018 , respectively, and $9,905 and $29,793 for the three and nine months ended September 30, 2017 , respectively. On July 1, 2018, the Company entered into a new lease agreement for office space at its headquarters at 55 East 52nd St., New York, New York. Under the terms of the agreement, the Company committed to extend the lease term for its current space and add space on up to seven additional floors, three of which commence as of the lease’s effective date. The Company anticipates it will take possession of the remainder of these floors over the next five years . When all floors have commenced, the Company will have approximately 350,000 square feet of space at this location. The lease term for all current and prospective space will end on June 30, 2034. The Company anticipates that the approximate aggregate additional minimum future payments under this arrangement, net of rent abatement and certain other rent credits, will be as follows as of September 30, 2018 : 2018 $ 15 2019 629 2020 6,240 2021 11,671 2022 16,641 Thereafter 402,976 Total $ 438,172 Private Equity – As of September 30, 2018 , the Company had unfunded commitments for capital contributions of $3,294 to private equity funds. These commitments will be funded as required through the end of each private equity fund's investment period, subject to certain conditions. Such commitments are satisfied in cash and are generally required to be made as investment opportunities are consummated by the private equity funds. Lines of Credit – On June 24, 2016, Evercore Partners Services East L.L.C. ("East") entered into a loan agreement with PNC Bank, National Association ("PNC") for a revolving credit facility in an aggregate principal amount of up to $30,000 , to be used for working capital and other corporate activities. This facility is secured by East's accounts receivable and the proceeds therefrom, as well as certain assets of EGL, including certain of EGL's accounts receivable. In addition, the agreement contains certain reporting covenants as well as certain debt covenants that prohibit East and the Company from incurring other indebtedness subject to specified exceptions. The Company was in compliance with these covenants as of September 30, 2018 . Drawings under this facility bear interest at the prime rate. On January 2, 2018, East drew down $30,000 on this facility, which was repaid on March 2, 2018. The facility was renewed on June 21, 2018, and the maturity date was extended to June 21, 2019. ECB maintains a line of credit with BBVA Bancomer to fund its trading activities on an intra-day and overnight basis. The facility has a maximum aggregate principal amount of approximately $10,604 and is secured by trading securities. No interest is charged on the intra-day facility. The overnight facility is charged the Inter-Bank Balance Interest Rate plus 10 basis points. There have been no significant draw downs on ECB's line of credit since August 10, 2006. The line of credit is renewable annually. Other Commitments – In addition, the Company enters into commitments to pay contingent consideration related to certain of its acquisitions. At September 30, 2018 , the Company had a remaining commitment for contingent consideration related to its acquisition of Kuna & Co. KG in 2015. The Company also had a commitment at September 30, 2018 for contingent consideration related to an arrangement with the former employer of certain RECA employees. See Note 5 for further information. Restricted Cash – The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the statements of financial position that sum to the total of amounts shown in the Unaudited Condensed Consolidated Statements of Cash Flows: September 30, 2018 2017 Cash and Cash Equivalents $ 425,152 $ 439,855 Restricted Cash included in Other Assets 9,287 17,769 Total Cash, Cash Equivalents and Restricted Cash shown in the Statement of Cash Flows $ 434,439 $ 457,624 Restricted Cash included in Other Assets on the Unaudited Condensed Consolidated Statements of Financial Condition primarily represents letters of credit which are secured by cash as collateral for the lease of office space and security deposits for certain equipment. The restrictions will lapse when the leases end. Foreign Exchange – The Company entered into foreign currency exchange forward contracts to sell 2.2 billion Japanese yen for $20,136 during the second quarter of 2018 to fix the exchange rate for Japanese yen denominated accounts receivable. These contracts settled during the third quarter of 2018. Contingencies In the normal course of business, from time to time the Company and its affiliates are involved in judicial or regulatory proceedings, arbitration or mediation concerning matters arising in connection with the conduct of its businesses, including contractual and employment matters. In addition, Mexican, United Kingdom, Hong Kong, Singapore, Canadian, Dubai and United States government agencies and self-regulatory organizations, as well as state securities commissions in the United States, conduct periodic examinations and initiate administrative proceedings regarding the Company's business, including, among other matters, accounting and operational matters, that can result in censure, fine, the issuance of cease-and-desist orders or the suspension or expulsion of a broker-dealer, investment advisor, or its directors, officers or employees. In view of the inherent difficulty of determining whether any loss in connection with such matters is probable and whether the amount of such loss can be reasonably estimated, particularly in cases where claimants seek substantial or indeterminate damages or where investigations and proceedings are in the early stages, the Company cannot estimate the amount of such loss or range of loss, if any, related to such matters, how or if such matters will be resolved, when they will ultimately be resolved, or what the eventual settlement, fine, penalty or other relief, if any, might be. Subject to the foregoing, the Company believes, based on current knowledge and after consultation with counsel, that it is not currently party to any material pending proceedings (including the matter described below), individually or in the aggregate, the resolution of which would have a material effect on the Company. Provisions for losses are established in accordance with ASC 450, " Contingencies" when warranted. Once established, such provisions are adjusted when there is more information available or when an event occurs requiring a change. Beginning in November 2016, several putative class actions were filed, and thereafter consolidated, in the U.S. District Court for the Eastern District of Texas relating to Adeptus Health Inc.'s ("Adeptus") June 2014 initial public offering and May 2015, July 2015 and June 2016 secondary offerings. Among others, the defendants included Adeptus and the underwriters in the offerings, including EGL. On April 19, 2017, Adeptus filed for Chapter 11 bankruptcy and was subsequently removed as a defendant. On November 21, 2017, plaintiffs filed a consolidated complaint that alleged as to the underwriters' violations of the Securities Act of 1933 in connection with the four offerings. The defendants filed motions to dismiss on February 5, 2018. On September 12, 2018, the defendants' motions to dismiss were granted as to the claims relating to the initial public offering and May 2015 secondary offering, but denied as to the claims relating to the July 2015 and June 2016 secondary offerings. EGL underwrote approximately 294 shares of common stock in the July 2015 secondary offering, representing an aggregate offering price of approximately $30.8 million, but did not underwrite any shares in the June 2016 secondary offering. On September 25, 2018, the plaintiffs filed an amended complaint relating to the July 2015 and June 2016 secondary offerings.

Regulatory Authorities

Regulatory Authorities	9 Months Ended
	Sep. 30, 2018
Banking and Thrift [Abstract]
Regulatory Authorities	Regulatory Authorities EGL is a U.S. registered broker-dealer and is subject to the net capital requirements of Rule 15c3-1 under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Under the Alternative Net Capital Requirement, EGL's minimum net capital requirement is $250 . EGL's regulatory net capital as of September 30, 2018 and December 31, 2017 was $191,546 and $238,588 , respectively, which exceeded the minimum net capital requirement by $191,296 and $238,338 , respectively. Certain other non-U.S. subsidiaries are subject to various securities and banking regulations and capital adequacy requirements promulgated by the regulatory and exchange authorities of the countries in which they operate. These subsidiaries are in excess of their local capital adequacy requirements at September 30, 2018 . ETC, which is limited to fiduciary activities, is regulated by the Office of the Comptroller of the Currency ("OCC") and is a member bank of the Federal Reserve System. The Company, Evercore LP and ETC are subject to written agreements with the OCC that, among other things, require the Company and Evercore LP to maintain at least $5,000 in Tier 1 capital in ETC (or such other amount as the OCC may require) and maintain liquid assets in ETC in an amount at least equal to the greater of $3,500 or 180 days coverage of ETC's operating expenses. The Company was in compliance with the aforementioned agreements as of September 30, 2018 .

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company's Provision for Income Taxes was $17,539 and $48,018 for the three and nine months ended September 30, 2018 , respectively, and $28,815 and $69,566 for the three and nine months ended September 30, 2017 , respectively. The effective tax rate was 23% and 16% for the three and nine months ended September 30, 2018 , respectively, and 32% and 28% for the three and nine months ended September 30, 2017 , respectively. In conjunction with the enactment of the Tax Cuts and Jobs Act on December 22, 2017, which reduced income tax rates in the U.S. in 2018 and future years, the Company's effective tax rate for the three and nine months ended September 30, 2018 was reduced by 12 percentage points before the impact of ASU 2016-09, "Improvements to Employee Share-Based Payment Accounting" ("ASU 2016-09"). The effective tax rate for the three and nine months ended September 30, 2018 and 2017 also reflects the application of ASU 2016-09, which was adopted effective January 1, 2017. ASU 2016-09 requires that the tax deduction associated with the appreciation in the Company's share price upon vesting of employee share-based awards above the original grant price be reflected in income tax expense. The application of ASU 2016-09 resulted in excess tax benefits from the delivery of Class A common stock under share-based payment arrangements of $22,830 and $23,663 being recognized in the Company's Provision for Income Taxes for the nine months ended September 30, 2018 and 2017, respectively, and resulted in a reduction in the effective tax rate of 8 and 9 percentage points for the nine months ended September 30, 2018 and 2017, respectively. The effective tax rate for 2018 and 2017 also reflects the effect of certain nondeductible expenses, including expenses related to Class E, J, I-P and K-P LP Units and Class G and H LP Interests, as well as the noncontrolling interest associated with LP Units and other adjustments. On December 22, 2017, the SEC issued SAB 118 to address the application of U.S. GAAP in situations when a registrant does not have the necessary information available or computed analysis in reasonable detail to complete the accounting for certain income tax effects of the Tax Cuts and Jobs Act. The Company recognized a provisional tax impact related to the re-measurement of net deferred tax assets, the write down of other comprehensive income related to certain foreign subsidiaries, the valuation allowance and effects of the mandatory deemed repatriation tax on undistributed earnings of foreign subsidiaries within its consolidated financial statements for the year ended December 31, 2017. The Company's estimated tax charge as a result of the Tax Cuts and Jobs Act could be subject to adjustments as the Company continues its analysis, which may be impacted by changes in interpretations and assumptions the Company has made in conjunction with the release of additional regulatory guidance that may be issued. There were no changes to the provisional amounts recognized in 2017; the Company expects to record any adjustments to the estimated tax impact associated with the Tax Cuts and Jobs Act in the period in which the items are recognized. Additionally, the Company expects to recognize the income tax effects associated with the new global intangible low-taxed income ("GILTI") provisions in the period incurred. For the three and nine months ended September 30, 2018, no additional income tax expense associated with the GILTI provisions has been reported and it is not expected to be material to the Company’s effective tax rate for the year. The Company reported an increase in deferred tax assets of $133 associated with changes in Unrealized Gain (Loss) on Marketable Securities and an increase of $73 associated with changes in Foreign Currency Translation Adjustment Gain (Loss), in Accumulated Other Comprehensive Income (Loss) for the nine months ended September 30, 2018. The Company reported a decrease in deferred tax assets of $218 associated with changes in Unrealized Gain (Loss) on Marketable Securities and a decrease of $3,244 associated with changes in Foreign Currency Translation Adjustment Gain (Loss), in Accumulated Other Comprehensive Income (Loss) for the nine months ended September 30, 2017. As of September 30, 2018, the Company had no unrecognized tax benefits. The Company classifies interest relating to tax matters and tax penalties as a component of income tax expense in its Unaudited Condensed Consolidated Statements of Operations.

Segment Operating Results

Segment Operating Results	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segment Operating Results	Segment Operating Results Business Segments – The Company's business results are categorized into the following two segments: Investment Banking and Investment Management. Investment Banking includes providing advice to clients on significant mergers, acquisitions, divestitures and other strategic corporate transactions, as well as services related to securities underwriting, private placement services and commissions for agency-based equity trading services and equity research. Investment Management includes advising third-party investors in Institutional Asset Management and Wealth Management and interests in private equity funds which are not managed by the Company. On October 18, 2017, the Company completed the sale of the Institutional Trust and Independent Fiduciary business of ETC, which was in the Investment Management segment. The Company's segment information for the three and nine months ended September 30, 2018 and 2017 is prepared using the following methodology: • Revenue, expenses and income (loss) from equity method investments directly associated with each segment are included in determining pre-tax income. • Expenses not directly associated with specific segments are allocated based on the most relevant measures applicable, including headcount, square footage and other performance and time-based factors. • Segment assets are based on those directly associated with each segment, or for certain assets shared across segments, those assets are allocated based on the most relevant measures applicable, including headcount and other factors. • Investment gains and losses, interest income and interest expense are allocated between the segments based on the segment in which the underlying asset or liability is held. Each segment's Operating Expenses include: a) employee compensation and benefits expenses that are incurred directly in support of the segment and b) non-compensation expenses, which include expenses for premises and occupancy, professional fees, travel and entertainment, communications and information services, execution, clearing and custody fees, equipment and indirect support costs (including compensation and other operating expenses related thereto) for administrative services. Such administrative services include, but are not limited to, accounting, tax, legal, facilities management and senior management activities. Other Expenses include the following: • Amortization of LP Units/Interests and Certain Other Awards - Includes amortization costs or the reversal of expenses associated with the vesting of Class E LP Units, Class G and H LP Interests and Class J LP Units issued in conjunction with the acquisition of ISI and certain other related awards. • Special Charges - Includes expenses in 2018 related to separation benefits and costs for the termination of certain contracts associated with closing the Company's agency trading platform in the U.K. and separation benefits and related charges associated with the Company's businesses in Mexico, as well as the acceleration of depreciation expense for leasehold improvements in conjunction with the previously announced expansion of the Company's headquarters in New York. Also includes expenses in 2017 related to the impairment of goodwill in the Company's Institutional Asset Management reporting unit and the impairment of the Company's investment in G5. • Acquisition and Transition Costs - Includes costs incurred in connection with acquisitions, divestitures and other ongoing business development initiatives, primarily comprised of professional fees for legal and other services. • Intangible Asset and Other Amortization - Includes amortization of intangible assets and other purchase accounting-related amortization associated with certain acquisitions. The Company evaluates segment results based on net revenues and pre-tax income, both including and excluding the impact of the Other Expenses. No client accounted for more than 10% of the Company's Consolidated Net Revenues for the three and nine months ended September 30, 2018 . The following information presents each segment's contribution. For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Investment Banking Net Revenues (1) $ 366,834 $ 388,299 $ 1,252,709 $ 1,115,478 Operating Expenses 287,809 293,264 946,629 844,573 Other Expenses (2) 7,888 11,748 21,805 26,663 Operating Income 71,137 83,287 284,275 244,242 Income (Loss) from Equity Method Investments — (75 ) 297 (111 ) Pre-Tax Income $ 71,137 $ 83,212 $ 284,572 $ 244,131 Identifiable Segment Assets $ 1,294,106 $ 1,239,812 $ 1,294,106 $ 1,239,812 Investment Management Net Revenues (1) $ 14,425 $ 18,302 $ 40,590 $ 48,840 Operating Expenses 11,022 14,027 32,973 40,441 Other Expenses (2) — 492 21 7,976 Operating Income 3,403 3,783 7,596 423 Income from Equity Method Investments 2,298 1,902 6,545 5,618 Pre-Tax Income $ 5,701 $ 5,685 $ 14,141 $ 6,041 Identifiable Segment Assets $ 411,501 $ 321,223 $ 411,501 $ 321,223 Total Net Revenues (1) $ 381,259 $ 406,601 $ 1,293,299 $ 1,164,318 Operating Expenses 298,831 307,291 979,602 885,014 Other Expenses (2) 7,888 12,240 21,826 34,639 Operating Income 74,540 87,070 291,871 244,665 Income from Equity Method Investments 2,298 1,827 6,842 5,507 Pre-Tax Income $ 76,838 $ 88,897 $ 298,713 $ 250,172 Identifiable Segment Assets $ 1,705,607 $ 1,561,035 $ 1,705,607 $ 1,561,035 (1) Net revenues include Other Revenue, net, allocated to the segments as follows: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Investment Banking (A) $ 4,108 $ (878 ) $ 3,219 $ (3,431 ) Investment Management (B) 1,747 2,018 3,987 1,803 Total Other Revenue, net $ 5,855 $ 1,140 $ 7,206 $ (1,628 ) (A) Investment Banking Other Revenue, net, includes interest expense on the Notes Payable, subordinated borrowings and the line of credit of $2,300 and $6,861 for the three and nine months ended September 30, 2018 , respectively, and $2,488 and $7,494 for the three and nine months ended September 30, 2017 , respectively. Also includes ($343) and ($606) of principal trading losses for the three and nine months ended September 30, 2017, respectively, to conform to the current presentation. (B) Includes $1,952 and $1,427 of net realized and unrealized gains on private equity investments for the three and nine months ended September 30, 2017, respectively, to conform to the current presentation. (2) Other Expenses are as follows: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Investment Banking Amortization of LP Units / Interests and Certain Other Awards $ 3,764 $ 9,249 $ 11,470 $ 4,980 Special Charges 1,967 — 3,864 14,400 Acquisition and Transition Costs — 107 — 107 Intangible Asset and Other Amortization 2,157 2,392 6,471 7,176 Total Investment Banking 7,888 11,748 21,805 26,663 Investment Management Special Charges — — — 7,107 Acquisition and Transition Costs — 492 21 869 Total Investment Management — 492 21 7,976 Total Other Expenses $ 7,888 $ 12,240 $ 21,826 $ 34,639 Geographic Information – The Company manages its business based on the profitability of the enterprise as a whole. The Company's revenues were derived from clients located and managed in the following geographical areas: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Net Revenues: (1) United States $ 290,944 $ 305,062 $ 1,023,686 $ 842,814 Europe and Other 82,063 94,654 239,226 314,154 Latin America 2,397 5,745 23,181 8,978 Total $ 375,404 $ 405,461 $ 1,286,093 $ 1,165,946 (1) Excludes Other Revenue, Including Interest and Investments, and Interest Expense. The Company's total assets are located in the following geographical areas: September 30, 2018 December 31, 2017 Total Assets: United States $ 1,438,902 $ 1,284,163 Europe and Other 200,020 234,984 Latin America 66,685 65,739 Total $ 1,705,607 $ 1,584,886

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation, Policy	Basis of Presentation – The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with the instructions to Form 10-Q. As permitted by the rules and regulations of the United States Securities and Exchange Commission, the unaudited condensed consolidated financial statements contain certain condensed financial information and exclude certain footnote disclosures normally included in audited consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). The accompanying condensed consolidated financial statements are unaudited and are prepared in accordance with U.S. GAAP. In the opinion of the Company's management, the accompanying unaudited condensed consolidated financial statements contain all adjustments, including normal recurring accruals, necessary to fairly present the accompanying unaudited condensed consolidated financial statements. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company's annual report on Form 10-K for the year ended December 31, 2017. The December 31, 2017 Unaudited Condensed Consolidated Statement of Financial Condition data was derived from audited consolidated financial statements, but does not include all disclosures required by U.S. GAAP. Operating results for the interim periods are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2018. The accompanying unaudited condensed consolidated financial statements of the Company are comprised of the consolidation of Evercore LP and Evercore LP's wholly-owned and majority-owned direct and indirect subsidiaries, including Evercore Group L.L.C. ("EGL"), a registered broker-dealer in the U.S. The Company's policy is to consolidate all subsidiaries in which it has a controlling financial interest, as well as any variable interest entities ("VIEs") where the Company is deemed to be the primary beneficiary, when it has the power to make the decisions that most significantly affect the economic performance of the VIE and has the obligation to absorb significant losses or the right to receive benefits that could potentially be significant to the VIE. The Company reviews factors, including the rights of the equity holders and obligations of equity holders to absorb losses or receive expected residual returns, to determine if the investment is a VIE. In evaluating whether the Company is the primary beneficiary, the Company evaluates its economic interests in the entity held either directly or indirectly by the Company. The consolidation analysis is generally performed qualitatively. This analysis, which requires judgment, is performed at each reporting date. Evercore LP is a VIE and the Company is the primary beneficiary. Specifically, the Company has the majority economic interest in Evercore LP and has decision making authority that significantly affects the economic performance of the entity while the limited partners have no kick-out or substantive participating rights. The assets and liabilities of Evercore LP represent substantially all of the consolidated assets and liabilities of the Company with the exception of U.S. corporate taxes and related items, which are presented on the Company's (Parent Company Only) Condensed Statements of Financial Position in Note 23 to the Company's consolidated financial statements in the Company's Annual Report on Form 10-K for the year ended December 31, 2017. International Strategy & Investment (U.K.) Limited ("ISI U.K.") and Evercore Partners International LLP ("Evercore U.K.") are also VIEs and the Company is the primary beneficiary of these VIEs. Specifically for ISI U.K., the Company provides financial support through a transfer pricing agreement with this entity, which exposes the Company to losses that are potentially significant to the entity, and has decision making authority that significantly affects the economic performance of the entity. The Company has the majority economic interest in Evercore U.K. and has decision making authority that significantly affects the economic performance of this entity. The Company included in its Unaudited Condensed Consolidated Statements of Financial Condition ISI U.K. and Evercore U.K. assets of $116,866 and liabilities of $75,482 at September 30, 2018 and assets of $126,078 and liabilities of $102,487 at December 31, 2017. All intercompany balances and transactions with the Company's subsidiaries have been eliminated upon consolidation
Revenue Recognition, Policy [Policy Text Block]	The Company adopted ASU No. 2014-09, "Revenue from Contracts with Customers" ("ASU 2014-09") on January 1, 2018 using the modified retrospective method of transition applied to contracts which were not completed as of January 1, 2018. The Company did not have a cumulative-effect adjustment as of the date of adoption. Following the adoption of ASU 2014-09, the Company’s accounting policies are as follows: ASU 2014-09 provides a five step model to revenue recognition: Step 1: Identify the contract(s) with a customer Step 2: Identify the performance obligations in the contract Step 3: Determine the transaction price Step 4: Allocate the transaction price to the performance obligations in the contract Step 5: Recognize revenue when (or as) the entity satisfies a performance obligation The Company applies this model to its Investment Banking and Asset Management revenue streams. Investment Banking Revenue - The Company earns investment banking fees from clients for providing advisory services on strategic matters, including mergers, acquisitions, divestitures, leveraged buyouts, restructurings, activism and defense and similar corporate finance matters. The Company's Investment Banking services also include services related to securities underwriting, private placement services and commissions for agency-based equity trading services and equity research. Revenue is recognized as the Company satisfies performance obligations, upon transfer of control of promised services to customers in an amount that reflects the consideration the Company expects to receive in exchange for these services. The Company’s contracts with customers may include promises to transfer multiple services to a customer. Determining whether services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. For performance obligations satisfied over time, determining a measure of progress requires the Company to make significant judgments that affect the timing of revenue recognized. For certain advisory services, the Company has concluded that performance obligations are satisfied over time. This is based on the premise that the Company transfers control of services and the client simultaneously receives benefits from these services over the course of an engagement. For performance obligations satisfied at a point in time, determining when control transfers requires the Company to make significant judgments that affect the timing of when revenue is recognized. The Company records Investment Banking Revenue on the Unaudited Condensed Consolidated Statements of Operations for the following: Advisory Fees - In general, advisory fees are paid at the time the Company signs an engagement letter, during the course of the engagement or when an engagement is completed. In some circumstances, and as a function of the terms of an engagement letter, the Company may receive fixed retainer fees for financial advisory services concurrent with, or soon after, the execution of the engagement letter or over the course of the engagement, where the engagement letter will specify a future service period associated with those fees. The Company may also receive announcement fees upon announcement of a transaction in addition to success fees upon closing of a transaction or another defined outcome, both of which represent variable consideration. This variable consideration will be included in the transaction price, as defined, and recognized as revenue to the extent that it is probable that a significant reversal of revenue will not occur. When assessing probability, the Company applies careful analysis and judgment to the remaining factors necessary for completion of a transaction, including factors outside of the Company's control. A transaction can fail to be completed for many reasons which are outside of the Company’s control, including failure of parties to agree upon final terms with the counterparty, to secure necessary board or shareholder approvals, to secure necessary financing or to achieve necessary regulatory approvals, or due to adverse market conditions. In the case of bankruptcy engagements, fees are subject to approval of the court. With respect to retainer, announcement and success fees, there are no distinct performance obligations aside from advisory activities, which are generally focused on achieving a milestone (typically, the announcement and/or the closing of a transaction). These advisory services are provided over time throughout the contract period. The Company recognizes revenue when distinct services are performed and when it is probable that a reversal of revenue will not occur, which is generally upon the announcement or closing of a transaction. Accordingly, in any given period, advisory fees recognized for certain transactions will relate to services performed in prior periods. In circumstances in which retainer fees are received in advance of services, these fees are initially recorded as deferred revenue (a contract liability), which is recorded in Other Current Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition, and subsequently recognized as advisory fee revenue in Advisory Fees on the Unaudited Condensed Consolidated Statements of Operations during the applicable time period within which the service is rendered. Announcement fees for advisory services are recognized upon announcement (the point at which it is determined that the reversal of revenue is not probable) and all other requirements for revenue recognition are satisfied. A portion of the announcement fee may be deferred based on the services remaining to be completed, if any. Success fees for advisory services, such as merger and acquisition advice, are recognized when it is determined that the reversal of revenue is not probable and all other requirements for revenue recognition are satisfied, which is generally at closing of the transaction. With respect to fairness or valuation opinions, fees are fixed and there is a distinct performance obligation, since the opinion is rendered separate from any other advisory activities. Revenues related to fairness or valuation opinions are recognized at the point in time when the opinion has been rendered and delivered to the client. In the event the Company was to receive an opinion or success fee in advance of the completion conditions noted above, such fee would initially be recorded as deferred revenue (a contract liability) in Other Current Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition and subsequently recognized as advisory fee revenue in Advisory Fees on the Unaudited Condensed Consolidated Statements of Operations when the conditions of completion have been satisfied. Placement fee revenues are attributable to capital raising on both corporations and financial sponsors. The Company recognizes placement fees in accordance with the terms of the engagement letter, which are generally contingent on the achievement of a capital commitment by an investor, at the time of the client's acceptance of capital or capital commitments. Underwriting Fees - Underwriting fees are attributable to public and private offerings of equity and debt securities and are recognized at the point in time when the offering has been deemed to be completed by the lead manager of the underwriting group. When the offering is completed, the performance obligation has been satisfied and the Company recognizes the applicable management fee, selling concession and underwriting fee. Estimated offering expenses are presented gross in the Unaudited Condensed Consolidated Statements of Operations. Commissions and Related Fees - Commissions and Related Fees include commissions received from customers for the execution of agency-based brokerage transactions in listed and over-the-counter equities. The execution of each trade order represents a distinct performance obligation and the transaction price at the point in time of trade order execution is fixed. Trade execution is satisfied at the point in time that the customer has control of the asset and as such, fees are recorded on a trade date basis or, in the case of payments under commission sharing arrangements, when earned. The Company also earns subscription fees for the sales of research. The delivery of research under subscription arrangements represents a distinct performance obligation that is satisfied over time. The fees are fixed and are recognized over the period in which the performance obligation is satisfied. Cash received before the subscription period ends is initially recorded as deferred revenue (a contract liability) in Other Current Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition, and is recognized in Commissions and Related Fees on the Unaudited Condensed Consolidated Statements of Operations ratably over the period in which the related services are rendered. Taxes collected from customers and remitted to governmental authorities are presented on a net basis on the Unaudited Condensed Consolidated Statements of Operations. Asset Management and Administration Fees - The Company's Investment Management business generates revenues from the management of client assets and through interests in private equity funds which are not managed by the Company. The Company’s contracts with customers may include promises to transfer multiple services to a customer. Determining whether services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. For performance obligations satisfied over time, determining a measure of progress requires the Company to make significant judgments that affect the timing of revenue recognized. Asset management fees for third-party clients are generally based on the value of the assets under management and any performance fees that may be negotiated with the client. The management of asset portfolios represents a distinct performance obligation that is satisfied over time. These fees are generally recognized over the period that the related services are provided and in which the performance obligation is satisfied, based upon the beginning, ending or average value of the assets for the relevant period. Fees paid in advance of services rendered are initially recorded as deferred revenue (a contract liability), which is recorded in Other Current Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition, and are recognized in Asset Management and Administration Fees on the Unaudited Condensed Consolidated Statements of Operations ratably over the period in which the related service is rendered. Generally, to the extent performance fee arrangements have been negotiated, these fees are earned when the likelihood of clawback is mathematically improbable. Fees generated for serving as an independent fiduciary and/or trustee are either based on a flat fee, are pre-negotiated with the client or are based on the value of assets under administration. The management of assets under administration represents a distinct performance obligation that is satisfied over time. For ongoing engagements, fees are billed quarterly either in advance or in arrears. Fees paid in advance of services rendered and satisfaction of the performance obligation are initially recorded as deferred revenue (a contract liability) in Other Current Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition, and are recognized in Asset Management and Administration Fees on the Unaudited Condensed Consolidated Statements of Operations ratably over the period in which the related services are rendered and the performance obligation is satisfied. The Company records performance fee revenue from the private equity funds when the returns on the private equity funds' investments exceed certain threshold minimums. These performance fees, or carried interest, are computed in accordance with the underlying private equity funds' partnership agreements and are based on investment performance over the life of each investment partnership. The Company records performance fees upon the earlier of the termination of the investment fund or when the likelihood of clawback is mathematically improbable.
Receivables, Policy [Policy Text Block]	Accounts Receivable and Contract Assets - Accounts Receivable consists primarily of investment banking fees and expense reimbursements charged to the Company's clients. The Company records Accounts Receivable, net of any allowance for doubtful accounts, when relevant revenue recognition criteria has been achieved and payment is conditioned on the passage of time. The Company maintains an allowance for doubtful accounts to provide coverage for estimated losses from its client receivables. The Company determines the adequacy of the allowance by estimating the probability of loss based on the Company's analysis of the client's creditworthiness and specifically reserves against exposure where the Company determines the receivables are impaired, which may include situations where a fee is in dispute or litigation has commenced. The Investment Banking and Investment Management receivables collection periods generally are within 90 days of invoice, with the exception of placement fees, which are generally collected within 180 days of invoice, and fees related to private funds capital raising, which are collected in a period exceeding one year . The collection period for restructuring transactions and private equity fee receivables may exceed 90 days . Receivables that are collected in a period exceeding one year are reflected in Other Assets on the Unaudited Condensed Consolidated Statements of Financial Condition. The Company records contract assets within Other Current Assets and Other Assets on the Unaudited Condensed Consolidated Statement of Financial Condition when payment is due from a client conditioned on future performance or the occurrence of other events. The Company also recognizes a contract asset for the incremental costs of obtaining a contract with a customer if the benefit of those costs is expected to be longer than one year . The Company applies a practical expedient to expense costs to obtain a contract as incurred when the amortization period is one year or less.

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue [Table Text Block]	The following table presents revenue recognized by the Company for the three and nine months ended September 30, 2018: For the Three Months Ended September 30, 2018 For the Nine Months Ended September 30, 2018 Investment Banking: Advisory Fees $ 305,949 $ 1,047,259 Underwriting Fees 11,440 62,784 Commissions and Related Fees 45,337 139,447 Total Investment Banking $ 362,726 $ 1,249,490 Investment Management: Asset Management and Administration Fees: Wealth Management $ 11,560 $ 33,826 Institutional Asset Management 1,118 2,777 Total Investment Management $ 12,678 $ 36,603
Contract with Customer, Asset and Liability [Table Text Block]	The change in the Company’s contract assets and liabilities during the period primarily reflects timing differences between the Company’s performance and the client’s payment. The Company’s receivables, contract assets and deferred revenue (contract liabilities) for the nine months ended September 30, 2018 are as follows: Receivables (Current) (1) Receivables (Long-term) (2) Contract Assets (Current) (3) Contract Assets (Long-term) (4) Deferred Revenue (Current Contract Liabilities) (5) Deferred Revenue (Long-term Contract Liabilities) (6) Balance at January 1, 2018 $ 184,993 $ 34,008 $ — $ — $ 3,147 $ 1,834 Increase (Decrease) 47,263 19,728 46,960 3,869 7,011 (103 ) Balance at September 30, 2018 $ 232,256 $ 53,736 $ 46,960 $ 3,869 $ 10,158 $ 1,731 (1) Included in Accounts Receivable on the Unaudited Condensed Consolidated Statements of Financial Condition. (2) Included in Other Assets on the Unaudited Condensed Consolidated Statements of Financial Condition. (3) Included in Other Current Assets on the Unaudited Condensed Consolidated Statements of Financial Condition. (4) Included in Other Assets on the Unaudited Condensed Consolidated Statements of Financial Condition. (5) Included in Other Current Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition. (6) Included in Other Long-term Liabilities on the Unaudited Condensed Consolidated Statements of Financial Condition.

Marketable Securities and Cer_2

Marketable Securities and Certificates of Deposit (Tables)	9 Months Ended
	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Unrealized Gain (Loss) on Investments	The amortized cost and estimated fair value of the Company's Marketable Securities as of September 30, 2018 and December 31, 2017 were as follows: September 30, 2018 December 31, 2017 Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Securities Investments - Debt Securities $ 1,298 $ — $ 5 $ 1,293 $ 1,806 $ — $ 11 $ 1,795 Securities Investments - Equity Securities 666 — 310 356 5,388 — 4,144 1,244 Debt Securities Carried by EGL 145,731 159 63 145,827 34,233 87 26 34,294 Investment Funds 55,940 7,716 4 63,652 22,027 5,678 6 27,699 Total $ 203,635 $ 7,875 $ 382 $ 211,128 $ 63,454 $ 5,765 $ 4,187 $ 65,032
Investments Classified by Contractual Maturity Date	Scheduled maturities of the Company's available-for-sale debt securities within the Securities Investments portfolio as of September 30, 2018 and December 31, 2017 were as follows: September 30, 2018 December 31, 2017 Amortized Cost Fair Value Amortized Cost Fair Value Due within one year $ 200 $ 200 $ 204 $ 204 Due after one year through five years 999 995 1,602 1,591 Due after five years through 10 years 99 98 — — Total $ 1,298 $ 1,293 $ 1,806 $ 1,795

Financial Instruments Owned a_2

Financial Instruments Owned and Pledged as Collateral at Fair Value, Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase (Tables)	9 Months Ended
	Sep. 30, 2018
Banking and Thrift [Abstract]
Schedule of Financial Instruments Owned and Pledged as Collateral Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase	As of September 30, 2018 and December 31, 2017 , a summary of the Company's assets, liabilities and collateral received or pledged related to these transactions was as follows: September 30, 2018 December 31, 2017 Asset (Liability) Balance Market Value of Collateral Received or (Pledged) Asset (Liability) Balance Market Value of Collateral Received or (Pledged) Assets Financial Instruments Owned and Pledged as Collateral at Fair Value $ 22,493 $ 19,374 Securities Purchased Under Agreements to Resell 3,616 $ 3,622 10,645 $ 10,643 Total Assets $ 26,109 $ 30,019 Liabilities Securities Sold Under Agreements to Repurchase $ (26,130 ) $ (26,133 ) $ (30,027 ) $ (30,020 )

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2018
Other Equity Method Investments [Member]
Schedule of Equity Method Investments [Line Items]
Schedule of Equity Method Investments	A summary of the Company's investments accounted for under the equity method of accounting as of September 30, 2018 and December 31, 2017 was as follows: September 30, 2018 December 31, 2017 ABS $ 37,634 $ 39,894 Atalanta Sosnoff 13,393 13,963 Luminis 6,296 5,999 Total $ 57,323 $ 59,856
Private Equity Funds [Member]
Schedule of Equity Method Investments [Line Items]
Schedule of Equity Method Investments	A summary of the Company's investment in the private equity funds as of September 30, 2018 and December 31, 2017 was as follows: September 30, 2018 December 31, 2017 ECP II $ 796 $ 833 Glisco II, Glisco III and Glisco IV 3,713 6,558 Trilantic IV and Trilantic V 5,201 6,421 Total Private Equity Funds $ 9,710 $ 13,812

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Categorization of Investments and Assets and Liabilities Measured at Fair Value on Recurring Basis	The following table presents the categorization of investments and certain other financial assets measured at fair value on a recurring basis as of September 30, 2018 and December 31, 2017 : September 30, 2018 Level I Level II Level III Total Corporate Bonds, Municipal Bonds and Other Debt Securities (1) $ 112,361 $ 56,660 $ — $ 169,021 Securities Investments (2) 6,342 1,942 — 8,284 Investment Funds 63,652 — — 63,652 Financial Instruments Owned and Pledged as Collateral at Fair Value 22,493 — — 22,493 Total Assets Measured At Fair Value $ 204,848 $ 58,602 $ — $ 263,450 December 31, 2017 Level I Level II Level III Total Corporate Bonds, Municipal Bonds and Other Debt Securities (1) $ — $ 44,648 $ — $ 44,648 Securities Investments (2) 4,336 1,795 — 6,131 Investment Funds 27,699 — — 27,699 Financial Instruments Owned and Pledged as Collateral at Fair Value 19,374 — — 19,374 Total Assets Measured At Fair Value $ 51,409 $ 46,443 $ — $ 97,852 (1) Includes $23,194 and $10,354 of treasury bills, municipal bonds and commercial paper classified within Cash and Cash Equivalents on the Unaudited Condensed Consolidated Statements of Financial Condition as of September 30, 2018 and December 31, 2017 , respectively. (2) Includes $6,635 and $3,092 of treasury bills and notes and municipal bonds classified within Cash and Cash Equivalents on the Unaudited Condensed Consolidated Statements of Financial Condition as of September 30, 2018 and December 31, 2017 , respectively.
Carrying Amount and Estimated Fair Value of Financial Instrument Assets and Liabilities which are Not Measured at Fair Value	The carrying amount and estimated fair value of the Company's financial instrument assets and liabilities, which are not measured at fair value on the Unaudited Condensed Consolidated Statements of Financial Condition , are listed in the tables below. September 30, 2018 Carrying Estimated Fair Value Amount Level I Level II Level III Total Financial Assets: Cash and Cash Equivalents $ 395,323 $ 395,323 $ — $ — $ 395,323 Certificates of Deposit 100,000 — 100,000 — 100,000 Debt Security Investment 9,305 — — 9,305 9,305 Securities Purchased Under Agreements to Resell 3,616 — 3,616 — 3,616 Accounts Receivable 232,256 — 232,256 — 232,256 Receivable from Employees and Related Parties 23,872 — 23,872 — 23,872 Closely-held Equity Security 1,079 — — 1,079 1,079 Financial Liabilities: Accounts Payable and Accrued Expenses $ 41,669 $ — $ 41,669 $ — $ 41,669 Securities Sold Under Agreements to Repurchase 26,130 — 26,130 — 26,130 Payable to Employees and Related Parties 34,167 — 34,167 — 34,167 Notes Payable 168,543 — 163,476 — 163,476 December 31, 2017 Carrying Estimated Fair Value Amount Level I Level II Level III Total Financial Assets: Cash and Cash Equivalents $ 596,141 $ 596,141 $ — $ — $ 596,141 Certificates of Deposit 63,527 — 63,527 — 63,527 Debt Security Investment 10,995 — — 10,995 10,995 Securities Purchased Under Agreements to Resell 10,645 — 10,645 — 10,645 Accounts Receivable 184,993 — 184,993 — 184,993 Receivable from Employees and Related Parties 17,030 — 17,030 — 17,030 Closely-held Equity Security 1,079 — — 1,079 1,079 Financial Liabilities: Accounts Payable and Accrued Expenses $ 34,111 $ — $ 34,111 $ — $ 34,111 Securities Sold Under Agreements to Repurchase 30,027 — 30,027 — 30,027 Payable to Employees and Related Parties 31,167 — 31,167 — 31,167 Notes Payable 168,347 — 171,929 — 171,929 Subordinated Borrowings 6,799 — 6,859 — 6,859

Notes Payable and Subordinate_2

Notes Payable and Subordinated Borrowings (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Schedule of Debt	Notes Payable is comprised of the following as of September 30, 2018 and December 31, 2017 : Carrying Value (a) Note Maturity Date Effective Annual Interest Rate September 30, 2018 December 31, 2017 Evercore Inc. 4.88% Series A Senior Notes 3/30/2021 5.16 % $ 37,752 $ 37,684 Evercore Inc. 5.23% Series B Senior Notes 3/30/2023 5.44 % 66,437 66,356 Evercore Inc. 5.48% Series C Senior Notes 3/30/2026 5.64 % 47,530 47,493 Evercore Inc. 5.58% Series D Senior Notes 3/30/2028 5.72 % 16,824 16,814 Total $ 168,543 $ 168,347 (a) Carrying value has been adjusted to reflect the presentation of debt issuance costs as a direct reduction from the related liability.

Noncontrolling Interest (Tables

Noncontrolling Interest (Tables)	9 Months Ended
	Sep. 30, 2018
Noncontrolling Interest [Abstract]
Schedule of Noncontrolling Interest	Noncontrolling Interest recorded in the unaudited condensed consolidated financial statements of the Company relates to the following approximate interests in certain consolidated subsidiaries, which are not owned by the Company: September 30, 2018 2017 Subsidiary: Evercore LP 11 % 13 % Evercore Wealth Management ("EWM") (1) 44 % 43 % PCA (1) 24 % 26 % (1) Noncontrolling Interests represent a blended rate for multiple classes of interests.
Changes in Noncontrolling Interest	Changes in Noncontrolling Interest for the nine months ended September 30, 2018 and 2017 were as follows: For the Nine Months Ended September 30, 2018 2017 Beginning balance $ 252,404 $ 256,033 Comprehensive Income: Net Income Attributable to Noncontrolling Interest 36,760 35,740 Other Comprehensive Income 8 1,264 Total Comprehensive Income 36,768 37,004 Evercore LP Units Purchased or Converted into Class A Shares (42,566 ) (29,393 ) Amortization and Vesting of LP Units/Interests 14,925 7,294 Other Items: Distributions to Noncontrolling Interests (30,374 ) (26,315 ) Issuance of Noncontrolling Interest 1,165 8,279 Purchase of Noncontrolling Interest (1,011 ) (261 ) Other, net — (221 ) Total Other Items (30,220 ) (18,518 ) Ending balance $ 231,311 $ 252,420

Net Income Per Share Attribut_2

Net Income Per Share Attributable to Evercore Inc. Common Shareholders (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Schedule of Basic and Diluted Net Income Per Share	The calculations of basic and diluted net income per share attributable to Evercore Inc. common shareholders for the three and nine months ended September 30, 2018 and 2017 are described and presented below. For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Basic Net Income Per Share Attributable to Evercore Inc. Common Shareholders Numerator: Net income attributable to Evercore Inc. common shareholders $ 49,461 $ 45,911 $ 213,935 $ 144,866 Denominator: Weighted average Class A Shares outstanding, including vested restricted stock units ("RSUs ") 40,966 39,045 40,762 39,873 Basic net income per share attributable to Evercore Inc. common shareholders $ 1.21 $ 1.18 $ 5.25 $ 3.63 Diluted Net Income Per Share Attributable to Evercore Inc. Common Shareholders Numerator: Net income attributable to Evercore Inc. common shareholders $ 49,461 $ 45,911 $ 213,935 $ 144,866 Noncontrolling interest related to the assumed exchange of LP Units for Class A Shares (b) (b) (b) (b) Associated corporate taxes related to the assumed elimination of Noncontrolling Interest described above (b) (b) (b) (b) Diluted net income attributable to Evercore Inc. common shareholders $ 49,461 $ 45,911 $ 213,935 $ 144,866 Denominator: Weighted average Class A Shares outstanding, including vested RSUs 40,966 39,045 40,762 39,873 Assumed exchange of LP Units for Class A Shares (a)(b) 1,297 1,420 1,405 473 Additional shares of the Company's common stock assumed to be issued pursuant to non-vested RSUs and deferred consideration, as calculated using the Treasury Stock Method 3,195 2,590 2,975 2,509 Shares that are contingently issuable (c) 400 981 400 2,032 Diluted weighted average Class A Shares outstanding 45,858 44,036 45,542 44,887 Diluted net income per share attributable to Evercore Inc. common shareholders $ 1.08 $ 1.04 $ 4.70 $ 3.23 (a) The Company has outstanding Class J limited partnership units of Evercore LP ("Class J LP Units"), which convert into Class E limited partnership units of Evercore LP ("Class E LP Units") and ultimately become exchangeable into Class A Shares on a one -for-one basis. During the three and nine months ended September 30, 2018 and 2017, the Class J LP Units were dilutive and consequently the effect of their exchange into Class A Shares has been included in the calculation of diluted net income per share attributable to Evercore Inc. common shareholders under the if-converted method. In computing this adjustment, the Company assumes that all Class J LP Units are converted into Class A Shares. (b) The Company also has outstanding Class A and E LP Units in Evercore LP, which give the holders the right to receive Class A Shares upon exchange on a one -for-one basis. During the three and nine months ended September 30, 2018 and 2017, the Class A and E LP Units were antidilutive and consequently the effect of their exchange into Class A Shares has been excluded from the calculation of diluted net income per share attributable to Evercore Inc. common shareholders. The units that would have been included in the denominator of the computation of diluted net income per share attributable to Evercore Inc. common shareholders if the effect would have been dilutive were 5,018 and 5,125 for the three and nine months ended September 30, 2018 , respectively, and 5,930 and 6,010 for the three and nine months ended September 30, 2017 , respectively. The adjustment to the numerator, diluted net income attributable to Class A common shareholders, if the effect would have been dilutive, would have been $6,423 and $26,881 for the three and nine months ended September 30, 2018 , respectively, and $6,628 and $20,746 for the three and nine months ended September 30, 2017 , respectively. In computing this adjustment, the Company assumes that all vested Class A LP Units and all Class E LP Units are converted into Class A Shares, that all earnings attributable to those shares are attributed to Evercore Inc. and, that the Company is subject to the statutory tax rates of a C-Corporation under a conventional corporate tax structure in the U.S. at prevailing corporate tax rates. The Company does not anticipate that the Class A and E LP Units will result in a dilutive computation in future periods. (c) The Company previously had outstanding Class G and H limited partnership interests of Evercore LP ("Class G and H LP Interests") which were contingently exchangeable into Class E LP Units, and ultimately Class A Shares, and has outstanding Class I-P units of Evercore LP ("Class I-P Units") which are contingently exchangeable into Class I limited partnership units of Evercore LP ("Class I LP Units"), and ultimately Class A Shares, and outstanding Class K-P units of Evercore LP ("Class K-P Units") which are contingently exchangeable into Class K limited partnership units of Evercore LP ("Class K LP Units"), and ultimately Class A Shares, as they are subject to certain performance thresholds being achieved. In July 2017, the Company exchanged all of the outstanding Class H LP Interests for a number of Class J LP Units. As of December 31, 2017, all of the Class G LP Interests either converted into Class E LP Units or were forfeited pursuant to their performance terms. See Note 15 for further discussion. For the purposes of calculating diluted net income per share attributable to Evercore Inc. common shareholders, the Company's Class G and H LP Interests and Class I-P and Class K-P Units are included in diluted weighted average Class A Shares outstanding as of the beginning of the period in which all necessary performance conditions have been satisfied. If all necessary performance conditions have not been satisfied by the end of the period, the number of shares that are included in diluted weighted average Class A Shares outstanding is based on the number of shares that would be issuable if the end of the reporting period were the end of the performance period. The Interests/Units that were assumed to be converted to an equal number of Class A Shares for purposes of computing diluted net income per share attributable to Evercore Inc. common shareholders were 400 for the three and nine months ended September 30, 2018 and 981 and 2,032 for the three and nine months ended September 30, 2017 , respectively.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	On July 1, 2018, the Company entered into a new lease agreement for office space at its headquarters at 55 East 52nd St., New York, New York. Under the terms of the agreement, the Company committed to extend the lease term for its current space and add space on up to seven additional floors, three of which commence as of the lease’s effective date. The Company anticipates it will take possession of the remainder of these floors over the next five years . When all floors have commenced, the Company will have approximately 350,000 square feet of space at this location. The lease term for all current and prospective space will end on June 30, 2034. The Company anticipates that the approximate aggregate additional minimum future payments under this arrangement, net of rent abatement and certain other rent credits, will be as follows as of September 30, 2018 : 2018 $ 15 2019 629 2020 6,240 2021 11,671 2022 16,641 Thereafter 402,976 Total $ 438,172
Restrictions on Cash and Cash Equivalents	Restricted Cash – The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the statements of financial position that sum to the total of amounts shown in the Unaudited Condensed Consolidated Statements of Cash Flows: September 30, 2018 2017 Cash and Cash Equivalents $ 425,152 $ 439,855 Restricted Cash included in Other Assets 9,287 17,769 Total Cash, Cash Equivalents and Restricted Cash shown in the Statement of Cash Flows $ 434,439 $ 457,624

Segment Operating Results (Tabl

Segment Operating Results (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Information Regarding Operations By Segment	The following information presents each segment's contribution. For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Investment Banking Net Revenues (1) $ 366,834 $ 388,299 $ 1,252,709 $ 1,115,478 Operating Expenses 287,809 293,264 946,629 844,573 Other Expenses (2) 7,888 11,748 21,805 26,663 Operating Income 71,137 83,287 284,275 244,242 Income (Loss) from Equity Method Investments — (75 ) 297 (111 ) Pre-Tax Income $ 71,137 $ 83,212 $ 284,572 $ 244,131 Identifiable Segment Assets $ 1,294,106 $ 1,239,812 $ 1,294,106 $ 1,239,812 Investment Management Net Revenues (1) $ 14,425 $ 18,302 $ 40,590 $ 48,840 Operating Expenses 11,022 14,027 32,973 40,441 Other Expenses (2) — 492 21 7,976 Operating Income 3,403 3,783 7,596 423 Income from Equity Method Investments 2,298 1,902 6,545 5,618 Pre-Tax Income $ 5,701 $ 5,685 $ 14,141 $ 6,041 Identifiable Segment Assets $ 411,501 $ 321,223 $ 411,501 $ 321,223 Total Net Revenues (1) $ 381,259 $ 406,601 $ 1,293,299 $ 1,164,318 Operating Expenses 298,831 307,291 979,602 885,014 Other Expenses (2) 7,888 12,240 21,826 34,639 Operating Income 74,540 87,070 291,871 244,665 Income from Equity Method Investments 2,298 1,827 6,842 5,507 Pre-Tax Income $ 76,838 $ 88,897 $ 298,713 $ 250,172 Identifiable Segment Assets $ 1,705,607 $ 1,561,035 $ 1,705,607 $ 1,561,035 (1) Net revenues include Other Revenue, net, allocated to the segments as follows: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Investment Banking (A) $ 4,108 $ (878 ) $ 3,219 $ (3,431 ) Investment Management (B) 1,747 2,018 3,987 1,803 Total Other Revenue, net $ 5,855 $ 1,140 $ 7,206 $ (1,628 ) (A) Investment Banking Other Revenue, net, includes interest expense on the Notes Payable, subordinated borrowings and the line of credit of $2,300 and $6,861 for the three and nine months ended September 30, 2018 , respectively, and $2,488 and $7,494 for the three and nine months ended September 30, 2017 , respectively. Also includes ($343) and ($606) of principal trading losses for the three and nine months ended September 30, 2017, respectively, to conform to the current presentation. (B) Includes $1,952 and $1,427 of net realized and unrealized gains on private equity investments for the three and nine months ended September 30, 2017, respectively, to conform to the current presentation. (2) Other Expenses are as follows: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Investment Banking Amortization of LP Units / Interests and Certain Other Awards $ 3,764 $ 9,249 $ 11,470 $ 4,980 Special Charges 1,967 — 3,864 14,400 Acquisition and Transition Costs — 107 — 107 Intangible Asset and Other Amortization 2,157 2,392 6,471 7,176 Total Investment Banking 7,888 11,748 21,805 26,663 Investment Management Special Charges — — — 7,107 Acquisition and Transition Costs — 492 21 869 Total Investment Management — 492 21 7,976 Total Other Expenses $ 7,888 $ 12,240 $ 21,826 $ 34,639
Revenues Derived from Clients and Private Equity Funds by Geographical Areas	. The Company's revenues were derived from clients located and managed in the following geographical areas: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Net Revenues: (1) United States $ 290,944 $ 305,062 $ 1,023,686 $ 842,814 Europe and Other 82,063 94,654 239,226 314,154 Latin America 2,397 5,745 23,181 8,978 Total $ 375,404 $ 405,461 $ 1,286,093 $ 1,165,946 (1) Excludes Other Revenue, Including Interest and Investments, and Interest Expense.
Assets by Geographic Areas	. The Company's total assets are located in the following geographical areas: September 30, 2018 December 31, 2017 Total Assets: United States $ 1,438,902 $ 1,284,163 Europe and Other 200,020 234,984 Latin America 66,685 65,739 Total $ 1,705,607 $ 1,584,886

Significant Accounting Polici_3

Significant Accounting Policies (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Significant Accounting Policies [Line Items]
Investment Banking And Investment Management Receivables Collection Periods				90 days
Placement Fees Receivables Collection Period				180 days
Private Funds Capital Raising Receivables Collection Period				1 year
Collection Period For Restructuring Transactions And Private Equity Fee Receivables				90 days
Receivables Reflected in Other Assets in Excess of Period				1 year
Contract Asset Recognized in Benefit in Excess of Period				1 year
Other Operating Expenses	[1]	$ 6,882	$ 7,191	$ 20,657	$ 18,224
Professional Fees	[1]	19,698	15,836	56,581	42,489
Net Realized and Unrealized Gains on Private Equity Fund Investments		(337)	1,208	(195)	(985)
Variable Interest Entity, Primary Beneficiary [Member]
Significant Accounting Policies [Line Items]
Consolidated Assets		116,866		116,866		$ 126,078
Consolidated Liabilities		$ 75,482		$ 75,482		$ 102,487
Execution, Clearing and Custody Fees [Member]
Significant Accounting Policies [Line Items]
Other Operating Expenses			3,140		10,029
Professional Fees			315		943
Other Revenue, Including Interest and Investments [Member]
Significant Accounting Policies [Line Items]
Principal Trading Losses			(343)		(606)
Net Realized and Unrealized Gains on Private Equity Fund Investments			$ 1,952		$ 1,427
[1]	Certain balances in the prior period were reclassified to conform to their current presentation. See Note 2 for further information.

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands		Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of Accounting Change(1)	[1]		$ 0
Accounting Standards Update 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of Accounting Change(1)		$ (2,229)
[1]	(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). See Note 3 for further information.

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Investment Banking [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 362,726	$ 1,249,490
Investment Banking [Member] | Advisory Fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	305,949	1,047,259
Investment Banking [Member] | Underwriting Fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	11,440	62,784
Investment Banking [Member] | Commissions and Related Fees [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	45,337	139,447
Investment Management [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	12,678	36,603
Investment Management [Member] | Wealth Management [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	11,560	33,826
Investment Management [Member] | Institutional Asset Management [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,118	$ 2,777

Revenue - Additional Informati

Revenue - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Revenue from Contracts with Customers [Line Items]
Contract with Customer, Liability, Revenue Recognized	$ 3,740	$ 8,984
Period in Which Performance Obligations Under Client Arrangements Settled		1 year
Underwriting Fees [Member]
Revenue from Contracts with Customers [Line Items]
Reimbursement Revenue	116	$ 3,913
Professional Fees [Member]
Revenue from Contracts with Customers [Line Items]
Cost of Reimbursable Expense	34	1,957
Travel and Related Expenses [Member]
Revenue from Contracts with Customers [Line Items]
Cost of Reimbursable Expense	16	391
Communications and Information Services [Member]
Revenue from Contracts with Customers [Line Items]
Cost of Reimbursable Expense	16	391
Other Operating Expenses [Member]
Revenue from Contracts with Customers [Line Items]
Cost of Reimbursable Expense	50	1,174
Investment Banking [Member] | Advisory Fees [Member]
Revenue from Contracts with Customers [Line Items]
Revenue, Variable Consideration Recognized	$ 50,829	$ 50,829

Revenue - Contract Balances (De

Revenue - Contract Balances (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Contract with Customer, Asset, Net, Current [Abstract]
Contract with Customer, Receivable, Net, Current	$ 184,993
Contract with Customer, Receivable, Current, Net Increase (Decrease)	47,263
Contract with Customer, Receivable, Net, Current	232,256
Contract with Customer, Asset, Gross, Current	0
Contract with Customer, Contract Asset, Current, Net Increase (Decrease)	46,960
Contract with Customer, Asset, Gross, Current	46,960
Contract with Customer, Asset, Net, Noncurrent [Abstract]
Contract with Customer, Receivable, Net, Noncurrent	34,008
Contract with Customer, Receivable, NonCurrent, Net Increase (Decrease)	19,728
Contract with Customer, Receivable, Net, Noncurrent	53,736
Contract with Customer, Asset, Gross, Noncurrent	0
Increase (Decrease) in Contract Receivables, Net	3,869
Contract with Customer, Asset, Gross, Noncurrent	3,869
Contract with Customer, Liability, Current [Abstract]
Contract with Customer, Liability, Current	3,147
Contract with Customer, Liability, Current, Net Increase (Decrease)	7,011
Contract with Customer, Liability, Current	10,158
Contract with Customer, Liability, Noncurrent [Abstract]
Contract with Customer, Liability, Noncurrent	1,834
Contract with Customer, Liability, Noncurrent, Net Increase (Decrease)	(103)
Contract with Customer, Liability, Noncurrent	$ 1,731

Business Developments, Acquis_2

Business Developments, Acquisition and Transition Costs, Special Charges and Intangible Asset Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Business Acquisition [Line Items]
Asset Acquisition, Contingent Consideration, Liability	$ 4,463		$ 4,463
Asset Acquisition, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	2,938		3,971
Acquisition and Transition Costs	0	$ 599	21	$ 976
Special Charges	1,967	0	3,864	21,507
Investment Banking [Member]
Business Acquisition [Line Items]
Acquisition and Transition Costs	0	107	0	107
Special Charges	1,967	0	3,864	14,400
Amortization of Intangible Assets	2,191	2,357	6,571	7,071
Investment Management [Member]
Business Acquisition [Line Items]
Acquisition and Transition Costs	0	492	21	869
Special Charges	0	0	0	7,107
Amortization of Intangible Assets	$ 110	$ 118	328	354
Special Charges [Member] | G5 [Member] | Investment Banking [Member]
Business Acquisition [Line Items]
Equity Method Investment, Other than Temporary Impairment				14,400
Institutional Asset Management [Member] | Special Charges [Member] | Investment Management [Member]
Business Acquisition [Line Items]
Goodwill, Impairment Loss				$ 7,107
PCA [Member]
Business Acquisition [Line Items]
Issuance of Noncontrolling Interest			$ 770

Related Parties (Details)

Related Parties (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Subordinated Borrowings	$ 0	$ 6,799
Other Assets [Member]
Related Party Transaction [Line Items]
Due from Related Parties, Noncurrent	$ 18,692	22,309
Executive Officer [Member]
Related Party Transaction [Line Items]
Subordinated Borrowings		$ 6,700

Marketable Securities and Cer_3

Marketable Securities and Certificates of Deposit - Amortized Cost and Estimated Fair Value of Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Marketable Securities, Amortized Cost Basis	$ 203,635	$ 63,454
Marketable Securities, Accumulated Gross Unrealized Gain, before Tax	7,875	5,765
Marketable Securities, Accumulated Gross Unrealized Loss, before Tax	382	4,187
Marketable Securities	211,128	65,032
Securities Investments - Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	1,298	1,806
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	5	11
Available-for-sale Securities	1,293	1,795
Securities Investments - Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Trading Securities, Cost	666	5,388
Trading Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Trading Securities, Accumulated Gross Unrealized Loss, before Tax	310	4,144
Trading Securities	356	1,244
Debt Securities Carried by EGL [Member]
Schedule of Available-for-sale Securities [Line Items]
Trading Securities, Cost	145,731	34,233
Trading Securities, Accumulated Gross Unrealized Gain, before Tax	159	87
Trading Securities, Accumulated Gross Unrealized Loss, before Tax	63	26
Trading Securities	145,827	34,294
investment Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Trading Securities, Cost	55,940	22,027
Trading Securities, Accumulated Gross Unrealized Gain, before Tax	7,716	5,678
Trading Securities, Accumulated Gross Unrealized Loss, before Tax	4	6
Trading Securities	$ 63,652	$ 27,699

Marketable Securities and Cer_4

Marketable Securities and Certificates of Deposit - Scheduled Maturities of Available-for-Sale Debt Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Due within one year, amortized cost	$ 200	$ 204
Due after one year through five years, amortized cost	999	1,602
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis	99	0
Total, amortized cost	1,298	1,806
Due within one year, fair value	200	204
Due after one year through five years, fair value	995	1,591
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value	98	0
Total, fair value	$ 1,293	$ 1,795

Marketable Securities and Cer_5

Marketable Securities and Certificates of Deposit - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Schedule Of Marketable Securities [Line Items]
Certificates of Deposit, at Carrying Value	$ 100,000,000		$ 100,000,000		$ 63,527,000
Securities Investments - Debt Securities [Member]
Schedule Of Marketable Securities [Line Items]
Marketable Securities, Realized Gains (Losses)	9,000		(26,000)	$ (26,000)
Securities Investments - Equity Securities [Member]
Schedule Of Marketable Securities [Line Items]
Marketable Securities, Realized and Unrealized Gains (Losses)	114,000	$ 32,000	(92,000)	(43,000)
Debt Securities Carried by EGL [Member]
Schedule Of Marketable Securities [Line Items]
Marketable Securities, Realized and Unrealized Gains (Losses)	(207,000)	(340,000)	(242,000)	(707,000)
Investment Funds [Member]
Schedule Of Marketable Securities [Line Items]
Marketable Securities, Realized and Unrealized Gains (Losses)	$ 3,004,000	$ 1,013,000	$ 4,120,000	$ 2,570,000

Financial Instruments Owned a_3

Financial Instruments Owned and Pledged as Collateral at Fair Value, Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase - Additional Information (Details)	9 Months Ended
	Sep. 30, 2018
Banking and Thrift [Abstract]
Securities Average Estimated Maturity Period (in years)	1 year 5 months
Confidence Level Value at Risk (as a percent)	98.00%
Value at Risk Threshold (as a percent)	0.10%

Financial Instruments Owned a_4

Financial Instruments Owned and Pledged as Collateral at Fair Value, Securities Purchased Under Agreements to Resell and Securities Sold Under Agreements to Repurchase - Summary of Assets, Liabilities and Collateral Received or Pledged (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial Instruments Owned and Pledged as Collateral at Fair Value	$ 22,493	$ 19,374
Securities Purchased Under Agreements to Resell	3,616	10,645
Securities Sold Under Agreements to Repurchase	(26,130)	(30,027)
Asset (Liability) Balance [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial Instruments Owned and Pledged as Collateral at Fair Value	22,493	19,374
Securities Purchased Under Agreements to Resell	3,616	10,645
Total Assets	26,109	30,019
Securities Sold Under Agreements to Repurchase	(26,130)	(30,027)
Market Value of Collateral Received or (Pledged) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities Purchased Under Agreements to Resell	3,622	10,643
Securities Sold Under Agreements to Repurchase	$ (26,133)	$ (30,020)

Investments - Summary of Other

Investments - Summary of Other Equity Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
Equity Method Investment	$ 57,323	$ 59,856
ABS [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment	37,634	39,894
Atalanta Sosnoff [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment	13,393	13,963
Luminis [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment	$ 6,296	$ 5,999

Investments - Additional Inform

Investments - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2010
Schedule of Investments [Line Items]
Income from Equity Method Investments	$ 2,298,000	$ 1,827,000	$ 6,842,000	$ 5,507,000
Equity Method Investment	57,323,000		57,323,000		$ 59,856,000
Marketable Securities	211,128,000		211,128,000		65,032,000
Net Realized and Unrealized Gains (Losses) on Private Equity Fund Investments, Including Performance Fees	(337,000)	1,208,000	(195,000)	(985,000)
Previously Received Carried Interest Subject to Repayment	0		0
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	5,277,000		5,277,000		8,730,000
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	7,880,000		7,880,000		10,996,000
Unfunded Commitments for Capital Contributions	3,294,000		3,294,000
Equity Securities without Readily Determinable Fair Value, Amount	1,079,000		1,079,000		1,079,000
Private Equity Funds [Member]
Schedule of Investments [Line Items]
Equity Method Investment	$ 9,710,000		$ 9,710,000		13,812,000
ABS [Member]
Schedule of Investments [Line Items]
Equity Method Investment, Ownership Percentage	46.00%		46.00%
Income from Equity Method Investments	$ 1,997,000	1,676,000	$ 5,760,000	4,919,000
Equity Method Investment	$ 37,634,000		$ 37,634,000		39,894,000
Atalanta Sosnoff [Member]
Schedule of Investments [Line Items]
Equity Method Investment, Ownership Percentage	49.00%		49.00%
Income from Equity Method Investments	$ 301,000	190,000	$ 785,000	621,000
Equity Method Investment	$ 13,393,000		$ 13,393,000		13,963,000
Luminis [Member]
Schedule of Investments [Line Items]
Equity Method Investment, Ownership Percentage	19.00%		19.00%
Income from Equity Method Investments		54,000	$ 297,000	111,000
Equity Method Investment	$ 6,296,000		6,296,000		5,999,000
Equity Method Investments [Member]
Schedule of Investments [Line Items]
Amortization of Intangible Assets	223,000	$ 391,000	669,000	$ 1,172,000
G5 [Member]
Schedule of Investments [Line Items]
Held-to-maturity Securities	9,305,000		9,305,000		10,995,000
Glisco IV [Member] | Private Equity Funds [Member]
Schedule of Investments [Line Items]
Equity Method Investment	45,000		$ 45,000
ECP II [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] | Minimum [Member]
Schedule of Investments [Line Items]
Percent Ownership of Carried Interest			8.00%
ECP II [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] | Maximum [Member]
Schedule of Investments [Line Items]
Percent Ownership of Carried Interest			9.00%
ECP II [Member] | Private Equity Funds [Member]
Schedule of Investments [Line Items]
Equity Method Investment	796,000		$ 796,000		833,000
Cash	788,000		788,000
Marketable Securities	8,000		8,000
Glisco II [Member]
Schedule of Investments [Line Items]
Distribution Made to Limited Partner, Cash Distributions Paid			2,059,000
Trilantic IV [Member]
Schedule of Investments [Line Items]
Distribution Made to Limited Partner, Cash Distributions Paid			194,000
Investment					1,178,000
Trilantic V [Member]
Schedule of Investments [Line Items]
Distribution Made to Limited Partner, Cash Distributions Paid			1,549,000
Investment	417,000		417,000		4,513,000
Capital Commitment	5,000,000		5,000,000
Unfunded Commitments for Capital Contributions	632,000		632,000
Trilantic [Member]
Schedule of Investments [Line Items]
Issued LP Units (in shares)						500,000
Limited Partnership Investment						$ 16,090,000
Investment	9,982,000		9,982,000		10,399,000
Participation in Successor Funds	12,000,000		12,000,000
Glisco [Member]
Schedule of Investments [Line Items]
Equity Securities without Readily Determinable Fair Value, Amount	$ 1,609,000		$ 1,609,000		$ 2,172,000

Investments - Summary of Invest

Investments - Summary of Investments in Private Equity Funds (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
Investment in Private Equity Funds	$ 57,323	$ 59,856
Private Equity Funds [Member]
Schedule of Equity Method Investments [Line Items]
Investment in Private Equity Funds	9,710	13,812
Private Equity Funds [Member] | ECP II [Member]
Schedule of Equity Method Investments [Line Items]
Investment in Private Equity Funds	796	833
Private Equity Funds [Member] | Glisco II, III and IV [Member]
Schedule of Equity Method Investments [Line Items]
Investment in Private Equity Funds	3,713	6,558
Private Equity Funds [Member] | Trilantic IV and V [Member]
Schedule of Equity Method Investments [Line Items]
Investment in Private Equity Funds	$ 5,201	$ 6,421

Fair Value Measurements - Categ

Fair Value Measurements - Categorization of Investments and Certain Other Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	$ 263,450	$ 97,852
Corporate Bonds, Municipal Bonds and Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	169,021	44,648
Securities Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	8,284	6,131
Investment Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	63,652	27,699
Financial Instruments Owned and Pledged as Collateral at Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	22,493	19,374
Level I [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	204,848	51,409
Cash and Cash Equivalents	395,323	596,141
Level I [Member] | Corporate Bonds, Municipal Bonds and Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	112,361	0
Level I [Member] | Securities Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	6,342	4,336
Level I [Member] | Investment Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	63,652	27,699
Level I [Member] | Financial Instruments Owned and Pledged as Collateral at Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	22,493	19,374
Level II [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	58,602	46,443
Cash and Cash Equivalents	0	0
Level II [Member] | Corporate Bonds, Municipal Bonds and Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	56,660	44,648
Level II [Member] | Securities Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	1,942	1,795
Level II [Member] | Investment Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	0	0
Level II [Member] | Financial Instruments Owned and Pledged as Collateral at Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	0	0
Level III [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	0	0
Cash and Cash Equivalents	0	0
Level III [Member] | Corporate Bonds, Municipal Bonds and Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	0	0
Level III [Member] | Securities Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	0	0
Level III [Member] | Investment Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	0	0
Level III [Member] | Financial Instruments Owned and Pledged as Collateral at Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Assets Measured At Fair Value	0	0
Treasury Bills, Municipal Bonds and Commercial Paper [Member] | Corporate Bonds, Municipal Bonds and Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents	23,194	10,354
Treasury Bills, Municipal Bonds and Commercial Paper [Member] | Securities Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents	$ 6,635	$ 3,092

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amount and Estimated Fair Value of Financial Instrument Assets and Liabilities which are Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Level I [Member]
Financial Assets:
Cash and Cash Equivalents	$ 395,323	$ 596,141
Certificates of Deposit	0	0
Debt Security Investment	0	0
Securities Purchased Under Agreements to Resell	0	0
Accounts Receivable	0	0
Receivable from Employees and Related Parties	0	0
Closely-held Equity Security	0	0
Financial Liabilities:
Accounts Payable and Accrued Expenses	0	0
Securities Sold Under Agreements to Repurchase	0	0
Payable to Employees and Related Parties	0	0
Notes Payable	0	0
Subordinated Borrowings		0
Level II [Member]
Financial Assets:
Cash and Cash Equivalents	0	0
Certificates of Deposit	100,000	63,527
Debt Security Investment	0	0
Securities Purchased Under Agreements to Resell	3,616	10,645
Accounts Receivable	232,256	184,993
Receivable from Employees and Related Parties	23,872	17,030
Closely-held Equity Security	0	0
Financial Liabilities:
Accounts Payable and Accrued Expenses	41,669	34,111
Securities Sold Under Agreements to Repurchase	26,130	30,027
Payable to Employees and Related Parties	34,167	31,167
Notes Payable	163,476	171,929
Subordinated Borrowings		6,859
Level III [Member]
Financial Assets:
Cash and Cash Equivalents	0	0
Certificates of Deposit	0	0
Debt Security Investment	9,305	10,995
Securities Purchased Under Agreements to Resell	0	0
Accounts Receivable	0	0
Receivable from Employees and Related Parties	0	0
Closely-held Equity Security	1,079	1,079
Financial Liabilities:
Accounts Payable and Accrued Expenses	0	0
Securities Sold Under Agreements to Repurchase	0	0
Payable to Employees and Related Parties	0	0
Notes Payable	0	0
Subordinated Borrowings		0
Carrying Amount [Member]
Financial Assets:
Cash and Cash Equivalents	395,323	596,141
Certificates of Deposit	100,000	63,527
Debt Security Investment	9,305	10,995
Securities Purchased Under Agreements to Resell	3,616	10,645
Accounts Receivable	232,256	184,993
Receivable from Employees and Related Parties	23,872	17,030
Closely-held Equity Security	1,079	1,079
Financial Liabilities:
Accounts Payable and Accrued Expenses	41,669	34,111
Securities Sold Under Agreements to Repurchase	26,130	30,027
Payable to Employees and Related Parties	34,167	31,167
Notes Payable	168,543	168,347
Subordinated Borrowings		6,799
Total [Member]
Financial Assets:
Cash and Cash Equivalents	395,323	596,141
Certificates of Deposit	100,000	63,527
Debt Security Investment	9,305	10,995
Securities Purchased Under Agreements to Resell	3,616	10,645
Accounts Receivable	232,256	184,993
Receivable from Employees and Related Parties	23,872	17,030
Closely-held Equity Security	1,079	1,079
Financial Liabilities:
Accounts Payable and Accrued Expenses	41,669	34,111
Securities Sold Under Agreements to Repurchase	26,130	30,027
Payable to Employees and Related Parties	34,167	31,167
Notes Payable	$ 163,476	171,929
Subordinated Borrowings		$ 6,859

Notes Payable and Subordinate_3

Notes Payable and Subordinated Borrowings - Additional Information (Details) - USD ($)	Mar. 30, 2016	May 31, 2018	Mar. 31, 2018	Apr. 30, 2017	Feb. 28, 2017	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Minimum Repayment of Aggregate Principal Amount of Senior Notes (as a percent)						5.00%
Outstanding Principal Amount of Senior Notes (as a percent)						100.00%
Subordinated Borrowing, Interest Rate (as a percent)						5.50%
Subordinated Borrowings						$ 0	$ 6,799,000
Subordinated Debt [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount		$ 99,000	$ 6,700,000	$ 3,751,000	$ 6,000,000
Parent Company [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount	$ 120,000,000
Parent Company [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	170,000,000
Parent Company [Member] | Series A Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 38,000,000
Debt Instrument, Interest Rate, Stated Percentage	4.88%
Parent Company [Member] | Series B Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 67,000,000
Debt Instrument, Interest Rate, Stated Percentage	5.23%
Parent Company [Member] | Series C Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 48,000,000
Debt Instrument, Interest Rate, Stated Percentage	5.48%
Parent Company [Member] | Series D Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 17,000,000
Debt Instrument, Interest Rate, Stated Percentage	5.58%

Notes Payable and Subordinate_4

Notes Payable and Subordinated Borrowings - Schedule of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Series A Senior Notes [Member]
Debt Instrument [Line Items]
Effective Annual Interest Rate	5.16%
Carrying Value	$ 37,752	$ 37,684
Series B Senior Notes [Member]
Debt Instrument [Line Items]
Effective Annual Interest Rate	5.44%
Carrying Value	$ 66,437	66,356
Series C Senior Notes [Member]
Debt Instrument [Line Items]
Effective Annual Interest Rate	5.64%
Carrying Value	$ 47,530	47,493
Series D Senior Notes [Member]
Debt Instrument [Line Items]
Effective Annual Interest Rate	5.72%
Carrying Value	$ 16,824	16,814
Senior Notes [Member]
Debt Instrument [Line Items]
Carrying Value	$ 168,543	$ 168,347

Evercore Inc. Stockholders' E_2

Evercore Inc. Stockholders' Equity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		Oct. 22, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Temporary Equity [Line Items]
Dividends Declared Per Share of Class A Common Stock (in dollars per share)			$ 0.5	$ 0.34	$ 1.40	$ 1.02
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share)					$ 1.40
Declared and Paid Dividends, Cash					$ 57,448
Accrued Deferred Cash Dividends					$ 9,092
Treasury Stock, Shares, Acquired (in shares)					1,908
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)					$ 98.20
Increase in Treasury Stock					$ 187,457
LP Units Exchanged By Employees (in units)					1,081
Increase in Common Stock					$ 11
Adjustments to Additional Paid-In-Capital					42,555
Accumulated Unrealized Gain (Loss) on Marketable Securities			$ (3,660)		(3,660)
Foreign Currency Translation Adjustment Gain (Loss), Net			$ (25,380)		$ (25,380)
Cumulative Effect of Accounting Change	[1]							$ 0
Accounting Standards Update 2016-01 [Member]
Temporary Equity [Line Items]
Cumulative Effect of Accounting Change							$ (2,229)
Share Repurchase Program [Member]
Temporary Equity [Line Items]
Treasury Stock, Shares, Acquired (in shares)					848
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)					$ 96.05
Share Repurchase Program [Member] | Minimum [Member]
Temporary Equity [Line Items]
Treasury Stock Acquired, Market Value Per Share (in dollars per share)					85.91
Share Repurchase Program [Member] | Maximum [Member]
Temporary Equity [Line Items]
Treasury Stock Acquired, Market Value Per Share (in dollars per share)					$ 112.30
Net Settlement of Share Based Awards [Member]
Temporary Equity [Line Items]
Treasury Stock, Shares, Acquired (in shares)					1,060
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)					$ 99.92
Net Settlement of Share Based Awards [Member] | Minimum [Member]
Temporary Equity [Line Items]
Treasury Stock Acquired, Market Value Per Share (in dollars per share)					89.98
Net Settlement of Share Based Awards [Member] | Maximum [Member]
Temporary Equity [Line Items]
Treasury Stock Acquired, Market Value Per Share (in dollars per share)					$ 115.30
Subsequent Event [Member]
Temporary Equity [Line Items]
Dividends Declared Per Share of Class A Common Stock (in dollars per share)		$ 0.50
[1]	(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). See Note 3 for further information.

Noncontrolling Interest - Sched

Noncontrolling Interest - Schedule of Noncontrolling Interest (Details)	Sep. 30, 2018	Sep. 30, 2017
Evercore LP [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)	11.00%	13.00%
Evercore Wealth Management [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)	44.00%	43.00%
Private Capital Advisory L.P. (PCA) [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)	24.00%	26.00%

Noncontrolling Interest - Chang

Noncontrolling Interest - Changes In Noncontrolling Interest (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance			$ 252,404
Comprehensive Income:
Net Income Attributable to Noncontrolling Interest	$ 9,838	$ 14,171	36,760	$ 35,740
Total Comprehensive Income	10,265	15,131	36,768	37,004
Total Other Items			(55,678)	(25,572)
Ending balance	231,311		231,311
Noncontrolling Interest [Member]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance			252,404	256,033
Comprehensive Income:
Net Income Attributable to Noncontrolling Interest			36,760	35,740
Other Comprehensive Income			8	1,264
Total Comprehensive Income			36,768	37,004
Evercore LP Units Purchased or Converted into Class A Shares			(42,566)	(29,393)
Amortization and Vesting of LP Units/Interests			14,925	7,294
Distributions to Noncontrolling Interests			(30,374)	(26,315)
Issuance of Noncontrolling Interest			1,165	8,279
Purchase of Noncontrolling Interest			(1,011)	(261)
Other, net			0	(221)
Total Other Items			(30,220)	(18,518)
Ending balance	$ 231,311	$ 252,420	$ 231,311	$ 252,420

Noncontrolling Interest - Addit

Noncontrolling Interest - Additional Information (Details) - USD ($) shares in Thousands, $ in Thousands	Mar. 29, 2018	Mar. 03, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Noncontrolling Interest [Line Items]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest			$ (2)	$ 5	$ (66)	$ 79
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest			$ 429	$ 955	74	1,185
Adjustments to Additional Paid-In-Capital					(42,555)
Noncontrolling Interest [Member]
Noncontrolling Interest [Line Items]
Issuance of Noncontrolling Interest					1,165	8,279
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests					1,011	$ 261
LP Unit Purchases [Member]
Noncontrolling Interest [Line Items]
Evercore LP Units Purchased or Converted into Class A Common Stock, Shares						32
Noncontrolling Interest, Period Increase (Decrease)						$ 2,523
Class A LP Units [Member]
Noncontrolling Interest [Line Items]
Grant of LP Units (in units)						111
Class A LP Units [Member] | Noncontrolling Interest [Member]
Noncontrolling Interest [Line Items]
Issuance of Noncontrolling Interest						$ 8,169
PCA [Member]
Noncontrolling Interest [Line Items]
Issuance of Noncontrolling Interest					770
Purchase of Noncontrolling Interest (as a percent)	15.00%	13.00%
Purchase of Noncontrolling Interest	$ 25,525	$ 7,071
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests					298	261
Adjustments to Additional Paid-In-Capital					$ 25,227	$ 6,810

Net Income Per Share Attribut_3

Net Income Per Share Attributable to Evercore Inc. Common Shareholders - Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Basic Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)	40,966	39,045	40,762	39,873
Basic net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 1.21	$ 1.18	$ 5.25	$ 3.63
Diluted Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)	40,966	39,045	40,762	39,873
Diluted weighted average of Class A Shares outstanding (in shares)	45,858	44,036	45,542	44,887
Diluted net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 1.08	$ 1.04	$ 4.70	$ 3.23
Class A [Member]
Basic Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Net income attributable to Evercore Inc. common shareholders	$ 49,461	$ 45,911	$ 213,935	$ 144,866
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)	40,966	39,045	40,762	39,873
Basic net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 1.21	$ 1.18	$ 5.25	$ 3.63
Diluted Net Income Per Share Attributable to Evercore Inc. Common Shareholders
Net income attributable to Evercore Inc. common shareholders	$ 49,461	$ 45,911	$ 213,935	$ 144,866
Noncontrolling interest related to the assumed exchange of LP Units for Class A Shares
Associated corporate taxes related to the assumed elimination of Noncontrolling Interest described above
Diluted net income attributable to Evercore Inc. common shareholders	$ 49,461	$ 45,911	$ 213,935	$ 144,866
Weighted average shares of Class A common stock outstanding, including vested RSUs (in shares)	40,966	39,045	40,762	39,873
Assumed exchange of LP Units for Class A Shares (in shares)	1,297	1,420	1,405	473
Additional shares of the Company's common stock assumed to be issued pursuant to non-vested RSUs and deferred consideration, as calculated using the Treasury Stock Method (in shares)	3,195	2,590	2,975	2,509
Shares that are contingently issuable (in shares)	400	981	400	2,032
Diluted weighted average of Class A Shares outstanding (in shares)	45,858	44,036	45,542	44,887
Diluted net income per share attributable to Evercore Inc. common shareholders (in dollars per share)	$ 1.08	$ 1.04	$ 4.70	$ 3.23

Net Income Per Share Attribut_4

Net Income Per Share Attributable to Evercore Inc. Common Shareholders - Additional Information (Details) shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Nov. 30, 2016	Sep. 30, 2018USD ($)shares	Sep. 30, 2017USD ($)shares	Sep. 30, 2018USD ($)shares	Sep. 30, 2017USD ($)shares
Class G And H Interests and Class I-P and K-P Units [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Shares that are Contingently Issuable		400	981	400	2,032
LP Units [Member] | Class A and E LP Units [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares)		5,018	5,930	5,125	6,010
Adjustment to Diluted Net Income Attributable to Class A Common Shareholders if LP Units were Dilutive | $		$ 6,423	$ 6,628	$ 26,881	$ 20,746
LP Units [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Limited Partnership Units Convertible Conversion Ratio	1			1

Share-Based and Other Deferre_2

Share-Based and Other Deferred Compensation (Details) $ / shares in Units, $ in Thousands

1 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

23 Months Ended

Nov. 30, 2017USD ($)shares

Jul. 31, 2017voteshares

Nov. 30, 2016USD ($)trancheshares

Sep. 30, 2018USD ($)shares

Sep. 30, 2017USD ($)shares

Mar. 31, 2017USD ($)shares

Sep. 30, 2018USD ($)payment_installment$ / sharesshares

Sep. 30, 2017USD ($)shares

Dec. 31, 2018USD ($)

Dec. 31, 2017USD ($)

Dec. 31, 2016USD ($)shares

Dec. 31, 2014shares

Feb. 15, 2020shares

Mar. 31, 2018USD ($)

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Deferred Compensation Arrangement Compensation Expense

$ 13,147

$ 8,599

$ 41,328

$ 18,419

Severance Costs

538

953

7,022

4,421

Cash Payments Related to Separation Benefits

763

$ 54

6,636

$ 2,399

Special Charges [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Severance Costs

$ 781

$ 2,024

LP Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Limited Partnership Units Convertible Conversion Ratio

1

1

2016 Stock Incentive Plan [Member] | Class A [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of Additional Shares Authorized (in shares) | shares

10,000,000

Number of Shares Available for Grant (in shares) | shares

5,367,000

7,412,000

5,367,000

7,412,000

Long Term Incentive Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Deferred Compensation Arrangement Compensation Expense

$ 7,007

$ 6,721

$ 21,082

$ 19,279

Long Term Incentive Plan Performance Period (in years)

4 years

Deferred Compensation Arrangement with Individual, Recorded Liability

63,225

$ 63,225

Number of Payment Installments | payment_installment

3

Deferred Compensation Arrangement with Individual, Distribution Paid

19,401

Long Term Incentive Plan [Member] | Second Installment [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Deferred Compensation Arrangement with Individual, Distribution Paid

$ 4,532

Class G LP Interests [Member] | Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Management Basis EBIT Margin (as a percent)

12.00%

Class G LP Interests [Member] | Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Management Basis EBIT Margin (as a percent)

16.00%

Class H LP Interests [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Class H Interests Performance Period (in years)

3 years

Class H LP Interests [Member] | Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Management Basis EBIT Margin (as a percent)

7.00%

Management Basis EBIT

$ 8,000

Class H LP Interests [Member] | Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Management Basis EBIT Margin (as a percent)

17.00%

Management Basis EBIT

$ 48,000

Class I-P Units [Member] | Board of Directors Chairman [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Compensation Expense

1,164

1,164

3,455

3,455

Grant of I-P Units (in units) | shares

400,000

Retirement Notice Requirement

1 year

Number of Tranches of Class I-P Units | tranche

2

Number of Class I-P Units in Each Tranche (in units) | shares

200,000

Number of Consecutive Trading Days Required for Class I-P Units to Exceed Thresholds

20 days

Grant of I-P Units, Fair Value of Award

$ 24,412

Class K-P Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Compensation Expense

302

897

Limited Partnership Units Convertible Conversion Ratio

1

Grant of K-P Units (in units) | shares

64,000

K-P Units to be Granted Upon Achievement of Benchmarks (in units) | shares

16,000

Grant of K-P Units, Fair Value of Award

$ 5,000

Restricted Stock Units (RSUs) [Member] | 2006 and 2016 Stock Incentive Plans [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Compensation Expense

41,679

38,124

$ 130,785

116,363

Shares Vested During Period (in shares) | shares

2,472,000

Shares Forfeited During Period (in shares) | shares

51,000

Restricted Stock Units (RSUs) [Member] | 2016 Stock Incentive Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Shares Issued During Period (in shares) | shares

1,932,000

Restricted Stock Units (RSUs) [Member] | 2016 Stock Incentive Plan [Member] | Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares

$ 86.23

Restricted Stock Units (RSUs) [Member] | 2016 Stock Incentive Plan [Member] | Maximum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares

$ 114.80

Deferred Cash Compensation Program [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Deferred Compensation, Vesting Period (in years)

4 years

Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount

$ 3,750

$ 41,147

$ 82,592

Restricted Cash Award [Member] | Board of Directors Chairman [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Retirement Notice Requirement

6 months

Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount

$ 35,000

Deferred Compensation Arrangement With Individual Cash Award Tranche One Vesting Amount

11,000

Deferred Compensation Arrangement With Individual Cash Award Tranche Two Vesting Amount

$ 6,000

Awards Vesting Period

4 years

Restricted Cash Award [Member] | Minimum [Member] | Board of Directors Chairman [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount

$ 8,750

Restricted Cash Award [Member] | Maximum [Member] | Board of Directors Chairman [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount

$ 35,000

Other Deferred Cash [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount

$ 29,500

Awards Vesting Period

5 years

Employee Loans [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Deferred Compensation Arrangement Compensation Expense

5,701

5,021

$ 13,810

14,050

Deferred Compensation Arrangement with Individual, Recorded Liability

39,408

$ 39,408

Requisite Service Period (in years)

1 year

Maximum Contractual Term (in years)

5 years

Evercore ISI [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Management Basis EBIT Margin (as a percent)

11.70%

Management Basis EBIT

$ 26,904

Evercore ISI [Member] | Scenario, Forecast [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Management Basis EBIT Margin (as a percent)

14.00%

Management Basis EBIT

$ 34,357

Evercore ISI [Member] | Class E LP Units [Member] | Acquisition Related [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Units Amended In Period (in units) | shares

19,000

Evercore ISI [Member] | Class E LP Units [Member] | Acquisition Related [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Compensation Expense

4,835

15,273

Evercore ISI [Member] | Class G LP Interests [Member] | Acquisition Related [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Units Amended In Period (in units) | shares

14,000

Evercore ISI [Member] | Class H LP Interests [Member] | Acquisition Related [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of Units Outstanding (in units) | shares

4,148,000

Units Amended In Period (in units) | shares

162,000

Evercore ISI [Member] | Class H LP Interests [Member] | Acquisition Related [Member] | Scenario, Forecast [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Interests That Would Vest Related To Acquisition Related Awards Based On Current Performance (in units) | shares

2,005,000

Evercore ISI [Member] | Class J LP Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Common Stock, Number of Votes | vote

1

Evercore ISI [Member] | Class J LP Units [Member] | Class B [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock Issued During Period, Shares, New Issues | shares

1

Evercore ISI [Member] | Class J LP Units [Member] | Acquisition Related [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Compensation Expense

$ 3,741

2,315

$ 11,313

2,315

Evercore ISI [Member] | Class G And H Interests [Member] | Acquisition Related [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Compensation Expense

$ 2,003

$ (26,224)

(12,897)

Evercore ISI [Member] | Vested LP Units [Member] | Class E LP Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Grant of LP Units (in units) | shares

710,000

Evercore ISI [Member] | Vested LP Units [Member] | Class G LP Interests [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Grant of LP Units (in units) | shares

538,000

Evercore ISI [Member] | Vested LP Units [Member] | Class H LP Interests [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Grant of LP Units (in units) | shares

2,044,000

Evercore ISI [Member] | Vested LP Units [Member] | Class J LP Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Grant of LP Units (in units) | shares

1,012,000

Evercore ISI [Member] | Vested LP Units [Member] | Class J LP Units [Member] | Subject to Continued Employment [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Grant of LP Units (in units) | shares

963,000

Evercore ISI [Member] | Unvested LP Units [Member] | Class E LP Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Grant of LP Units (in units) | shares

710,000

Evercore ISI [Member] | Unvested LP Units [Member] | Class G LP Interests [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Grant of LP Units (in units) | shares

540,000

Evercore ISI [Member] | Unvested LP Units [Member] | Class H LP Interests [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Grant of LP Units (in units) | shares

2,051,000

Evercore ISI [Member] | Unvested LP Units [Member] | Class J LP Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Grant of LP Units (in units) | shares

938,000

Evercore ISI [Member] | Modified LP Units and Interests [Member] | Acquisition Related [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Compensation Expense

3,532

Amended Grant Date Weighted Average Fair Value, Granted

$ 14,891

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) shares in Thousands, ¥ in Billions	Jul. 01, 2018ft²Floor	Mar. 02, 2018USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2018JPY (¥)	Jun. 24, 2016USD ($)	Jul. 31, 2015USD ($)shares
Other Commitments [Line Items]
Rental Expense Relating to Operating Leases			$ 11,470,000	$ 9,905,000	$ 32,042,000	$ 29,793,000
Additional Floors | Floor	7
Additional Floors Commencing on Lease Effective Date | Floor	3
Time to Take Possession of Additional Floors	5 years
Square Feet of Office Space | ft²	350,000
Unfunded Commitments for Capital Contributions			3,294,000		$ 3,294,000
Underwritten Shares (in shares) | shares										294
Aggregate Offering Price										$ 30,800,000
Inter-Bank Balance Interest Rate [Member]
Other Commitments [Line Items]
Debt Instrument, Basis Spread on Variable Rate					0.10%
Foreign Exchange Forward [Member]
Other Commitments [Line Items]
Derivative Asset, Notional Amount							$ 20,136,000	¥ 2.2
PNC Bank [Member]
Other Commitments [Line Items]
Maximum Borrowing Capacity									$ 30,000,000
Amount Outstanding During Period		$ 30,000,000
BBVA Bancomer [Member]
Other Commitments [Line Items]
Maximum Borrowing Capacity			$ 10,604,000		$ 10,604,000

Commitments and Contingencies_2

Commitments and Contingencies - Aggregate Minimum Future Payments Required on Operating Leases (Details) $ in Thousands	Sep. 30, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,018	$ 15
2,019	629
2,020	6,240
2,021	11,671
2,022	16,641
Thereafter	402,976
Total	$ 438,172

- Commitments and Contingencies

- Commitments and Contingencies - Restricted Cash (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Cash and Cash Equivalents	$ 425,152	$ 609,587	$ 439,855
Restricted Cash included in Other Assets	9,287		17,769
Total Cash, Cash Equivalents and Restricted Cash shown in the Statement of Cash Flows	$ 434,439	$ 617,385	$ 457,624	$ 575,637

Regulatory Authorities (Details

Regulatory Authorities (Details) - USD ($)	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
EGL [Member]
Regulatory Authorities [Line Items]
Alternative Net Capital Requirement	$ 250,000
Net Capital	191,546,000	$ 238,588,000
Alternative Excess Net Capital	191,296,000	$ 238,338,000
Evercore Trust Company [Member]
Regulatory Authorities [Line Items]
Tier One Capital	5,000,000
Minimum Liquid Assets, Amount	$ 3,500,000
Coverage of Operating Expenses (in days)	180 days

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Provision for Income Taxes	$ 17,539	$ 28,815	$ 48,018	$ 69,566
Effective Income Tax Rate Reconciliation, Percent	23.00%	32.00%	16.00%	28.00%
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Percent	12.00%		12.00%
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount			$ 22,830	$ 23,663
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Percent			8.00%	9.00%
Increase (Decrease) In Deferred Tax Assets Associated With Changes In Unrealized Gain Loss On Marketable Securities In Accumulated Other Comprehensive Income Loss			$ 133	$ (218)
Increase (Decrease) In Deferred Tax Assets Associated With Changes In Foreign Currency Translation Adjustment Gain Loss In Accumulated Other Comprehensive Income Loss			$ 73	$ (3,244)

Segment Operating Results - Add

Segment Operating Results - Additional Information (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2018Client	Sep. 30, 2018Clientsegment
Segment Reporting [Abstract]
Number of reporting segments | segment		2
Number Of Clients Contributing More Than Ten Percent Revenue | Client	0	0

Segment Operating Results (Deta

Segment Operating Results (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net Revenues	$ 381,259	$ 406,601	$ 1,293,299	$ 1,164,318
Operating Expenses	298,831	307,291	979,602	885,014
Other Expenses	7,888	12,240	21,826	34,639
Income Before Income from Equity Method Investments and Income Taxes	74,540	87,070	291,871	244,665
Income (Loss) from Equity Method Investments	2,298	1,827	6,842	5,507
Pre-Tax Income	76,838	88,897	298,713	250,172
Identifiable Segment Assets	1,705,607	1,561,035	1,705,607	1,561,035	$ 1,584,886
Investment Banking [Member]
Segment Reporting Information [Line Items]
Net Revenues	366,834	388,299	1,252,709	1,115,478
Operating Expenses	287,809	293,264	946,629	844,573
Other Expenses	7,888	11,748	21,805	26,663
Income Before Income from Equity Method Investments and Income Taxes	71,137	83,287	284,275	244,242
Income (Loss) from Equity Method Investments	0	(75)	297	(111)
Pre-Tax Income	71,137	83,212	284,572	244,131
Identifiable Segment Assets	1,294,106	1,239,812	1,294,106	1,239,812
Investment Management [Member]
Segment Reporting Information [Line Items]
Net Revenues	14,425	18,302	40,590	48,840
Operating Expenses	11,022	14,027	32,973	40,441
Other Expenses	0	492	21	7,976
Income Before Income from Equity Method Investments and Income Taxes	3,403	3,783	7,596	423
Income (Loss) from Equity Method Investments	2,298	1,902	6,545	5,618
Pre-Tax Income	5,701	5,685	14,141	6,041
Identifiable Segment Assets	$ 411,501	$ 321,223	$ 411,501	$ 321,223

Segment Operating Results - (Fo

Segment Operating Results - (Footnotes) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Other Revenue, net	$ 5,855	$ 1,140	$ 7,206	$ (1,628)
Net Realized and Unrealized Gains on Private Equity Fund Investments	(337)	1,208	(195)	(985)
Special Charges	1,967	0	3,864	21,507
Acquisition and Transition Costs	0	599	21	976
Total Other Expenses	7,888	12,240	21,826	34,639
Investment Banking [Member]
Segment Reporting Information [Line Items]
Other Revenue, net	4,108	(878)	3,219	(3,431)
Interest expense on Notes Payable, Subordinated Borrowing and Line of Credit	2,300	2,488	6,861	7,494
Amortization of LP Units / Interests and Certain Other Awards	3,764	9,249	11,470	4,980
Special Charges	1,967	0	3,864	14,400
Acquisition and Transition Costs	0	107	0	107
Intangible Asset and Other Amortization	2,157	2,392	6,471	7,176
Total Other Expenses	7,888	11,748	21,805	26,663
Investment Management [Member]
Segment Reporting Information [Line Items]
Other Revenue, net	1,747	2,018	3,987	1,803
Special Charges	0	0	0	7,107
Acquisition and Transition Costs	0	492	21	869
Total Other Expenses	$ 0	492	$ 21	7,976
Other Revenue, Including Interest and Investments [Member]
Segment Reporting Information [Line Items]
Principal Trading Losses		(343)		(606)
Net Realized and Unrealized Gains on Private Equity Fund Investments		1,952		1,427
Other Revenue, Including Interest and Investments [Member] | Investment Banking [Member]
Segment Reporting Information [Line Items]
Principal Trading Losses		(343)		(606)
Other Revenue, Including Interest and Investments [Member] | Investment Management [Member]
Segment Reporting Information [Line Items]
Net Realized and Unrealized Gains on Private Equity Fund Investments		$ 1,952		$ 1,427

Segment Operating Results - Rev

Segment Operating Results - Revenues Derived from Clients by Geographical Areas (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Net Revenues	$ 375,404	$ 405,461	$ 1,286,093	$ 1,165,946
United States [Member]
Segment Reporting Information [Line Items]
Net Revenues	290,944	305,062	1,023,686	842,814
Europe and Other [Member]
Segment Reporting Information [Line Items]
Net Revenues	82,063	94,654	239,226	314,154
Latin America [Member]
Segment Reporting Information [Line Items]
Net Revenues	$ 2,397	$ 5,745	$ 23,181	$ 8,978

Segment Operating Results - Ass

Segment Operating Results - Assets by Geographic Area (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Segment Reporting Information [Line Items]
Assets	$ 1,705,607	$ 1,584,886	$ 1,561,035
United States [Member]
Segment Reporting Information [Line Items]
Assets	1,438,902	1,284,163
Europe and Other [Member]
Segment Reporting Information [Line Items]
Assets	200,020	234,984
Latin America [Member]
Segment Reporting Information [Line Items]
Assets	$ 66,685	$ 65,739