Compound Annual Growth Rate, Revenue (as a percent)

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- Definition

Reversal Of Provision

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Special Charges incurred related to the impairment of intangible assets, Special Charges incurred in connection with exiting facilities and Special Charges related to acquisitions, including the exiting of facilities for office space, introducing fees as well as other professional fees

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No definition available.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount classified as accounts, notes and loans receivable attributable to disposal group held for sale or disposed of.

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Amount classified as goodwill attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount after tax of loss recognized that results from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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No definition available.

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Amount classified as liabilities attributable to disposal group held for sale or disposed of.

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Business Developments, Acquisition and Transition Costs, Special Charges and Intangible Asset Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	May 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Assets Held for Sale	$ 31,515		$ 31,515			$ 0
Disposal Group, Including Discontinued Operation, Goodwill, Current	28,442		28,442
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net	3,073		3,073
Liabilities Held for Sale	365		365			0
Acquisition and Transition Costs	377	$ (329)	377	$ (329)
Reversal Of Provision		733		733
Special Charges	21,507	0	21,507	0
Other Equity Method Investments [Member]
Business Acquisition [Line Items]
Equity Method Investment	67,671		67,671			79,717
G5 Evercore [Member] \| Other Equity Method Investments [Member]
Business Acquisition [Line Items]
Equity Method Investment	11,118		11,118		$ 11,555	$ 26,016
Investment Management [Member]
Business Acquisition [Line Items]
Acquisition and Transition Costs	377	404	377	404
Special Charges	7,107	0	7,107	0
Amortization of Intangible Assets	118	144	236	343
Investment Banking [Member]
Business Acquisition [Line Items]
Acquisition and Transition Costs	0	(733)	0	(733)
Special Charges	14,400	0	14,400	0
Amortization of Intangible Assets	$ 2,357	$ 2,862	$ 4,714	$ 6,077
Investment Banking [Member] \| G5 Evercore [Member]
Business Acquisition [Line Items]
Fair Value Inputs, Discount Rate	17.50%
Compound Annual Growth Rate, Revenue	5.00%		5.00%
Investment Banking [Member] \| Special Charges [Member] \| G5 Evercore [Member]
Business Acquisition [Line Items]
Equity Method Investment, Other than Temporary Impairment	$ 14,400		$ 14,400
Institutional Asset Management [Member] \| Investment Management [Member]
Business Acquisition [Line Items]
Fair Value Inputs, Discount Rate	17.50%
Compound Annual Growth Rate, Revenue	11.00%		11.00%
Goodwill, Impairment Loss, Net of Tax	$ 3,694		$ 3,694
Institutional Asset Management [Member] \| Investment Management [Member] \| Special Charges [Member]
Business Acquisition [Line Items]
Goodwill, Impairment Loss	$ 7,107		$ 7,107