Shareholders' Equity Outstanding Stock Options (Details) (USD $)
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3 Months Ended |
12 Months Ended |
Feb. 01, 2014
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Jan. 31, 2015
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Feb. 02, 2013
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Common stock, shares authorized |
100,000,000us-gaap_CommonStockSharesAuthorized
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100,000,000us-gaap_CommonStockSharesAuthorized
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Granted, 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, Options, Exercises in Period, Total Intrinsic Value |
$ 469,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
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$ 6,099,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
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$ 146,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
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2011 Omnibus Incentive Plan [Member] |
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Granted, weighted average grant date fair value |
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$ 4.65us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = evlv_A2011OmnibusIncentivePlanMember
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Options outstanding |
3,083,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = evlv_A2011OmnibusIncentivePlanMember
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2,463,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = evlv_A2011OmnibusIncentivePlanMember
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Options outstanding, weighted average exercise price |
$ 4.03us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = evlv_A2011OmnibusIncentivePlanMember
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$ 4.09us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = evlv_A2011OmnibusIncentivePlanMember
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Options outstanding, weighted average remaining contractual term |
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8 years 1 month 6 days
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Options outstanding, aggregate intrinsic value |
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5,228,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_PlanNameAxis = evlv_A2011OmnibusIncentivePlanMember
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Vested or expected to vest, outstanding |
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2,424,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber / us-gaap_PlanNameAxis = evlv_A2011OmnibusIncentivePlanMember
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Vested or expected to vest, outstanding, weighted average exercise price |
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$ 4.14us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = evlv_A2011OmnibusIncentivePlanMember
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Vested or expected to vest, outstanding, weighted average remaining contractual term |
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8 years 0 months 27 days
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Vested or expected to vest, outstanding, aggregate intrinsic value |
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5,161,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue / us-gaap_PlanNameAxis = evlv_A2011OmnibusIncentivePlanMember
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2004 Omnibus Incentive Stock Plan [Member] |
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Granted, weighted average grant date fair value |
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$ 5.66us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = evlv_A2004OmnibusIncentiveStockPlanMember
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Options outstanding |
2,104,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = evlv_A2004OmnibusIncentiveStockPlanMember
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1,206,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = evlv_A2004OmnibusIncentiveStockPlanMember
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Options outstanding, weighted average exercise price |
$ 6.25us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = evlv_A2004OmnibusIncentiveStockPlanMember
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$ 6.71us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = evlv_A2004OmnibusIncentiveStockPlanMember
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Options outstanding, weighted average remaining contractual term |
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4 years 7 months 2 days
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Options outstanding, aggregate intrinsic value |
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493,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_PlanNameAxis = evlv_A2004OmnibusIncentiveStockPlanMember
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Vested or expected to vest, outstanding |
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1,203,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber / us-gaap_PlanNameAxis = evlv_A2004OmnibusIncentiveStockPlanMember
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Vested or expected to vest, outstanding, weighted average exercise price |
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$ 6.67us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = evlv_A2004OmnibusIncentiveStockPlanMember
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Vested or expected to vest, outstanding, weighted average remaining contractual term |
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4 years 6 months 28 days
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Vested or expected to vest, outstanding, aggregate intrinsic value |
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489,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue / us-gaap_PlanNameAxis = evlv_A2004OmnibusIncentiveStockPlanMember
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2001 Omnibus Stock Plan [Member] |
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Granted, weighted average grant date fair value |
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$ 0.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = evlv_A2001OmnibusStockPlanMember
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Options outstanding |
1,121,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = evlv_A2001OmnibusStockPlanMember
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826,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = evlv_A2001OmnibusStockPlanMember
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Options outstanding, weighted average exercise price |
$ 6.05us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = evlv_A2001OmnibusStockPlanMember
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$ 6.89us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = evlv_A2001OmnibusStockPlanMember
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Options outstanding, weighted average remaining contractual term |
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3 years 6 months 17 days
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Options outstanding, aggregate intrinsic value |
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518,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_PlanNameAxis = evlv_A2001OmnibusStockPlanMember
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Vested or expected to vest, outstanding |
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826,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber / us-gaap_PlanNameAxis = evlv_A2001OmnibusStockPlanMember
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Vested or expected to vest, outstanding, weighted average exercise price |
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$ 6.89us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = evlv_A2001OmnibusStockPlanMember
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Vested or expected to vest, outstanding, weighted average remaining contractual term |
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3 years 6 months 16 days
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Vested or expected to vest, outstanding, aggregate intrinsic value |
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518,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue / us-gaap_PlanNameAxis = evlv_A2001OmnibusStockPlanMember
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Stock Option [Member] |
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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Granted, weighted average grant date fair value |
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$ 0.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = us-gaap_StockOptionMember
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Options outstanding |
500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = us-gaap_StockOptionMember
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450,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_PlanNameAxis = us-gaap_StockOptionMember
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Options outstanding, weighted average exercise price |
$ 4.24us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = us-gaap_StockOptionMember
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$ 4.51us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = us-gaap_StockOptionMember
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Options outstanding, weighted average remaining contractual term |
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5 years 4 months 9 days
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Options outstanding, aggregate intrinsic value |
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798,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue / us-gaap_PlanNameAxis = us-gaap_StockOptionMember
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Vested or expected to vest, outstanding |
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443,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber / us-gaap_PlanNameAxis = us-gaap_StockOptionMember
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Vested or expected to vest, outstanding, weighted average exercise price |
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$ 4.52us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice / us-gaap_PlanNameAxis = us-gaap_StockOptionMember
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Vested or expected to vest, outstanding, weighted average remaining contractual term |
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5 years 4 months 10 days
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Vested or expected to vest, outstanding, aggregate intrinsic value |
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$ 782,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue / us-gaap_PlanNameAxis = us-gaap_StockOptionMember
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