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Acquisition and Transition Costs and Special Charges (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Business Acquisition [Line Items] |  |  |
Acquisition and Transition Costs | $ 58 | $ 840 | $ 3,465
Special Charges | 170 | 662 | 3,894
Lexicon Partnership LLP [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Acquisition and Transition Costs |  |  | 2,118
Special charges incurred In connection with exiting of lease commitment for office space |  |  | 731
Special charges incurred for introducing fees |  |  | 1,895
Special charges for other professional fees |  |  | $ 1,268

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- Definition 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 + References No definition available. + Details
Name: | evr_SpecialCharges
Namespace Prefix: | evr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Special Charges Incurred for Introducing Fees + References No definition available. + Details
Name: | evr_SpecialChargesIncurredForIntroducingFees
Namespace Prefix: | evr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Special charges incurred in connection with exiting of a lease commitment for office space + References No definition available. + Details
Name: | evr_SpecialChargesIncurredInConnectionWithExitingOfLeaseCommitmentForOfficeSpace
Namespace Prefix: | evr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of other professional fees included within Special Charges. + References No definition available. + Details
Name: | evr_SpecialChargesOtherProfessionalFees
Namespace Prefix: | evr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=21917927&loc=d3e1043-128460 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration