Organization and Description of Business (Details)	6 Months Ended
Jun. 30, 2013 Item
Organization and Description of Business
Number of RIAs	4
Number of states with which the broker-dealer is registered	50

Represents the number of Registered Investment Advisors (RIAs), operated by the entity.

No definition available.

Name:	env_NumberOfRegisteredInvestmentAdvisors
Namespace Prefix:	env_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration