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Income Taxes (Details 4) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Summary of expected tax provision | |||
| Tax provision, at U.S. federal statutory tax rate | $ 7,878us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ 1,942us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ 1,043us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate |
| State income tax, net of federal tax benefit | 648us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | 149us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | 64us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes |
| Effects of permanent items | 552us-gaap_IncomeTaxReconciliationNondeductibleExpense | 581us-gaap_IncomeTaxReconciliationNondeductibleExpense | 414us-gaap_IncomeTaxReconciliationNondeductibleExpense |
| Effects pf to provision adjustment | (127)env_IncomeTaxReconciliationEffectOfReturnToProvisionAdjustments | (733)env_IncomeTaxReconciliationEffectOfReturnToProvisionAdjustments | (81)env_IncomeTaxReconciliationEffectOfReturnToProvisionAdjustments |
| Change in valuation allowance | (2,085)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | (620)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | |
| Capital loss write-off due to carryforward period expiration | 2,085env_IncomeTaxReconciliationEffectOfContractSettlements | ||
| Effect of change in federal and state income tax rate | (54)us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate | 691us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate | |
| Uncertain tax positions | 138env_IncomeTaxReconciliationUncertainTaxPositions | 1,016env_IncomeTaxReconciliationUncertainTaxPositions | 1,105env_IncomeTaxReconciliationUncertainTaxPositions |
| Foreign income taxes | (328)us-gaap_IncomeTaxReconciliationTaxCreditsForeign | (93)us-gaap_IncomeTaxReconciliationTaxCreditsForeign | |
| Effect of repatriation of foreign earnings | 582us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings | ||
| Research and development credits | (1,564)us-gaap_IncomeTaxReconciliationTaxCreditsResearch | (1,246)us-gaap_IncomeTaxReconciliationTaxCreditsResearch | |
| Federal and state NOL adjustments net of valuation allowance impact | 745env_IncomeTaxReconciliationFederalAndStateTrueup | ||
| Other | 312us-gaap_IncomeTaxReconciliationOtherAdjustments | 89us-gaap_IncomeTaxReconciliationOtherAdjustments | 80us-gaap_IncomeTaxReconciliationOtherAdjustments |
| Total | $ 8,528us-gaap_IncomeTaxExpenseBenefit | $ 2,052us-gaap_IncomeTaxExpenseBenefit | $ 2,603us-gaap_IncomeTaxExpenseBenefit |
| X | ||||||||||
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- Definition
Income tax reconciliation effect of contract settlements. No definition available.
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- Definition
Income tax reconciliation effect of return to provision adjustments. No definition available.
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- Definition
Amount of federal and state net operating loss true-up. No definition available.
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- Definition
Income tax reconciliation uncertain tax positions. No definition available.
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to repatriation of foreign earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign tax credit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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