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Business Changes and Developments Goodwill Associated with Acquisitions (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Goodwill [Roll Forward]    
Goodwill $ 189,274us-gaap_Goodwill [1] $ 188,684us-gaap_Goodwill
Goodwill, Acquired During Period 33,039us-gaap_GoodwillAcquiredDuringPeriod  
Goodwill, Translation Adjustments (4,081)us-gaap_GoodwillTranslationAdjustments 590us-gaap_GoodwillTranslationAdjustments
Goodwill 218,232us-gaap_Goodwill 189,274us-gaap_Goodwill [1]
Investment Banking [Member]    
Goodwill [Roll Forward]    
Goodwill 87,028us-gaap_Goodwill
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentBankingMember		 [1] 86,352us-gaap_Goodwill
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentBankingMember
Goodwill, Acquired During Period 33,039us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentBankingMember		  
Goodwill, Translation Adjustments (6,060)us-gaap_GoodwillTranslationAdjustments
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentBankingMember		 676us-gaap_GoodwillTranslationAdjustments
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentBankingMember
Goodwill 114,007us-gaap_Goodwill
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentBankingMember		 87,028us-gaap_Goodwill
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentBankingMember		 [1]
Investment Management [Member]    
Goodwill [Roll Forward]    
Goodwill 102,246us-gaap_Goodwill
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentManagementMember		 [1] 102,332us-gaap_Goodwill
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentManagementMember
Goodwill, Acquired During Period 0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentManagementMember		  
Goodwill, Translation Adjustments 1,979us-gaap_GoodwillTranslationAdjustments
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentManagementMember		 (86)us-gaap_GoodwillTranslationAdjustments
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentManagementMember
Goodwill $ 104,225us-gaap_Goodwill
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentManagementMember		 $ 102,246us-gaap_Goodwill
/ us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAxis
= evr_InvestmentManagementMember		 [1]
[1] (1)The balance includes the net effect of the goodwill related to the consolidation and disposition of Pan.