Annual report pursuant to Section 13 and 15(d)

Net Capital Requirements (Details)

Net Capital Requirements (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Net Capital Requirements  
SEC rule, maximum net capital ratio 15env_SECRuleMaximumRatioOfIndebtednessToNetCapital
SEC rule, restrictions on equity and dividends, maximum net capital ratio 10env_SECRuleEquityRestrictionsMaximumRatioOfIndebtednessToNetCapital
Net capital of the company (in dollars) $ 1,049us-gaap_NetCapital
Excess of net capital (in dollars) 949us-gaap_ExcessNetCapitalAt1500Percent
Required net capital (in dollars) $ 100us-gaap_MinimumNetCapitalRequired1
Company's net capital ratio 0.09us-gaap_RatioOfIndebtednessToNetCapital1