Shareholders' Equity Restricted Stock (Details) (USD $)
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3 Months Ended |
12 Months Ended |
0 Months Ended |
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Feb. 01, 2014
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Jan. 31, 2015
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Feb. 01, 2014
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Feb. 02, 2013
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Nov. 18, 2014
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Jun. 18, 2014
tranche
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Mar. 17, 2014
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Mar. 13, 2014
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Nov. 25, 2013
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Nov. 26, 2013
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Jun. 19, 2013
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Oct. 03, 2012
tranche
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Jun. 14, 2012
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Nov. 17, 2014
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Jun. 13, 2012
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Share-based compensation |
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$ 3,860,000us-gaap_ShareBasedCompensation
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$ 3,217,000us-gaap_ShareBasedCompensation
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$ 3,257,000us-gaap_ShareBasedCompensation
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Unrecognized compensation cost related to non-vested awards |
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1,633,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
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Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
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3 years
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Total grant date fair value |
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1,000,000evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityIntstrumentOtherThanOptionsAggregateValue
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Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value |
$ 3.96us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
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$ 3.92us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
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$ 1.03us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
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Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate |
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1.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
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Restricted Stock [Member] |
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Share-based compensation |
812,000us-gaap_ShareBasedCompensation / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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1,323,000us-gaap_ShareBasedCompensation / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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1,575,000us-gaap_ShareBasedCompensation / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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Unrecognized compensation cost related to non-vested awards |
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2,616,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term |
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2 years 0 months 25 days
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Restricted stock vested in period, total fair value |
2,800,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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1,136,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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874,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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Granted |
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392,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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56,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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4,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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53,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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436,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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44,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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300,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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50,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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Number of tranches |
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7evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNumberOfTranches / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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3evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNumberOfTranches / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
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3 years
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3 years
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3 years
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12 months
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Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate |
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60.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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78.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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Total grant date fair value |
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281,000evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityIntstrumentOtherThanOptionsAggregateValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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23,500evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityIntstrumentOtherThanOptionsAggregateValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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290,000evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityIntstrumentOtherThanOptionsAggregateValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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2,426,000evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityIntstrumentOtherThanOptionsAggregateValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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228,000evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityIntstrumentOtherThanOptionsAggregateValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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425,000evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityIntstrumentOtherThanOptionsAggregateValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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1,373,000evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityIntstrumentOtherThanOptionsAggregateValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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85,000evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityIntstrumentOtherThanOptionsAggregateValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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Number of non-management board members granted shares |
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$ 2evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfNonManagementBoardMembersGrantedShares / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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$ 6evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfNonManagementBoardMembersGrantedShares / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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$ 5evlv_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfNonManagementBoardMembersGrantedShares / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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Non-vested shares outstandings |
641,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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704,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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641,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value |
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$ 4.91us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate |
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1.03%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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0.32%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember
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Restricted Stock [Member] | Chief Strategy Officer [Member] |
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Granted |
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79,916us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = evlv_ChiefStrategyOfficerMember
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Restricted Stock [Member] | Chief Executive Officer [Member] |
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Granted |
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199,790us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember
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33% - 39% [Member] | Restricted Stock [Member] |
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Restricted Stock, Vesting Criteria, Cumulative Total Shareholder Return |
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50.00%evlv_RestrictedStockVestingCriteriaCumulativeTotalShareholderReturn / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_VestingAxis = evlv_A3339Member
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25% - 32% [Member] | Restricted Stock [Member] |
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Restricted Stock, Vesting Criteria, Cumulative Total Shareholder Return |
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25.00%evlv_RestrictedStockVestingCriteriaCumulativeTotalShareholderReturn / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_VestingAxis = evlv_A2532Member
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Below 25 Percent [Member] | Restricted Stock [Member] |
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Restricted Stock, Vesting Criteria, Cumulative Total Shareholder Return |
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0.00%evlv_RestrictedStockVestingCriteriaCumulativeTotalShareholderReturn / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_VestingAxis = evlv_Below25PercentMember
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50% or Above [Member] | Restricted Stock [Member] |
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Restricted Stock, Vesting Criteria, Cumulative Total Shareholder Return |
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100.00%evlv_RestrictedStockVestingCriteriaCumulativeTotalShareholderReturn / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_VestingAxis = evlv_A50orAboveMember
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40% - 49% [Member] | Restricted Stock [Member] |
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Restricted Stock, Vesting Criteria, Cumulative Total Shareholder Return |
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75.00%evlv_RestrictedStockVestingCriteriaCumulativeTotalShareholderReturn / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_VestingAxis = evlv_A4049Member
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