Future Payments Required on Senior Notes Including Principal and Interest (Detail) (Senior Notes, USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Senior Notes
Issuance Of Notes Payable And Warrants [Line Items]
2013	$ 6,240
2014	6,240
2015	6,240
2016	6,240
2017	6,240
Thereafter	138,720
Total	$ 169,920

Name:	evr_IssuanceOfNotesPayableAndWarrantsLineItems
Namespace Prefix:	evr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Long Term Debt Maturities Repayments Of Principal And Interest

No definition available.

Name:	evr_LongTermDebtMaturitiesRepaymentsOfPrincipalAndInterest
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Long Term Debt Maturities Repayments Of Principal And Interest After Year Five

No definition available.

Name:	evr_LongTermDebtMaturitiesRepaymentsOfPrincipalAndInterestAfterYearFive
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Long Term Debt Maturities Repayments of Principal and Interest In Next Twelve Months

No definition available.

Name:	evr_LongTermDebtMaturitiesRepaymentsOfPrincipalAndInterestInNextTwelveMonths
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Long Term Debt Maturities Repayments of Principal and Interest in Year Five

No definition available.

Name:	evr_LongTermDebtMaturitiesRepaymentsOfPrincipalAndInterestInYearFive
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Long Term Debt Maturities Repayments of Principal and Interest in Year Four

No definition available.

Name:	evr_LongTermDebtMaturitiesRepaymentsOfPrincipalAndInterestInYearFour
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Long Term Debt Maturities Repayments of Principal and Interest In Year Three

No definition available.

Name:	evr_LongTermDebtMaturitiesRepaymentsOfPrincipalAndInterestInYearThree
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Long Term Debt Maturities Repayments of Principal and Interest In Year Two

No definition available.

Name:	evr_LongTermDebtMaturitiesRepaymentsOfPrincipalAndInterestInYearTwo
Namespace Prefix:	evr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant