Annual report pursuant to Section 13 and 15(d)

Income Taxes (Schedule of Income Tax Expense (Benefit) Differed from Amounts Computed by Applying Statutory Federal Income Tax Rate to Pretax Income (Loss)) (Details)

v2.4.1.9
Income Taxes (Schedule of Income Tax Expense (Benefit) Differed from Amounts Computed by Applying Statutory Federal Income Tax Rate to Pretax Income (Loss)) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income tax expense (benefit) differed from the amounts computed by applying the statutory federal income tax rate to pretax income (loss), Amount      
Federal tax at statutory rate $ (11,437)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ (4,078)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ (4,947)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State tax, net of federal tax effect (509)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes (698)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes (835)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
R&D Credit (85)us-gaap_IncomeTaxReconciliationTaxCreditsResearch (280)us-gaap_IncomeTaxReconciliationTaxCreditsResearch   
Change in valuation allowance 6,371us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance 4,806us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance 5,734us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Non-deductible expenses 72us-gaap_IncomeTaxReconciliationNondeductibleExpense 431us-gaap_IncomeTaxReconciliationNondeductibleExpense 45us-gaap_IncomeTaxReconciliationNondeductibleExpense
Unrealized Gain/Loss on warrant 5,605ekso_IncomeTaxReconciliationUnrealizedGainLossOnWarrant    
Foreign 16us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential 17us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential  
Other (33)us-gaap_IncomeTaxReconciliationOtherAdjustments (198)us-gaap_IncomeTaxReconciliationOtherAdjustments 3us-gaap_IncomeTaxReconciliationOtherAdjustments
Total tax expense         
Income tax expense (benefit) differed from the amounts computed by applying the statutory federal income tax rate to pretax income (loss), Percentage      
Federal tax at statutory rate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State tax, net of federal tax effect 1.50%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 5.80%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 5.70%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
R&D Credit 0.30%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch 2.30%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch   
Change in valuation allowance (18.90%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance (40.10%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance (39.40%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Non-deductable expenses (0.20%)us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense (3.60%)us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense (0.30%)us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense
Unrealized Gain/Loss on warrant (16.70%)ekso_EffectiveIncomeTaxRateReconciliationUnrealizedGainLossOnWarrant    
Foreign (0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential (0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential  
Other 0.10%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 1.60%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments  
Total tax expense