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Debt (Details 4) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended |
|---|---|
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Dec. 31, 2014
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| Interest expense on convertible debt | |
| Accretion of debt discount | $ 626us-gaap_AmortizationOfDebtDiscountPremium |
| Unsecured debt | 1.75% convertible unsecured notes due December 2019 | |
| Interest expense on convertible debt | |
| Coupon interest |
126us-gaap_InterestExpenseDebtExcludingAmortization / us-gaap_DebtInstrumentAxis = env_ConvertibleUnsecured1.75PercentNotesDueDecember2019Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember |
| Amortization of issuance costs |
38us-gaap_AmortizationOfFinancingCosts / us-gaap_DebtInstrumentAxis = env_ConvertibleUnsecured1.75PercentNotesDueDecember2019Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember |
| Accretion of debt discount |
203us-gaap_AmortizationOfDebtDiscountPremium / us-gaap_DebtInstrumentAxis = env_ConvertibleUnsecured1.75PercentNotesDueDecember2019Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember |
| Interest Expense, Debt, Total |
$ 367us-gaap_InterestExpenseDebt / us-gaap_DebtInstrumentAxis = env_ConvertibleUnsecured1.75PercentNotesDueDecember2019Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember |
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- Definition
Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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