Post-effective amendment to a registration statement that is not immediately effective upon filing

Capitalization and Equity Structure (Warrants) (Details)

v2.4.1.9
Capitalization and Equity Structure (Warrants) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2014
Oct. 31, 2014
Class of Warrant or Right [Line Items]      
Number of shares 1,388,573us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 36,055,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 30,300,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Warrant liability $ 378us-gaap_DerivativeLiabilities     
Fair value of warrants 378us-gaap_WarrantsAndRightsOutstanding    
Preferred stock [Member] | Series A [Member]      
Class of Warrant or Right [Line Items]      
Number of shares 767,212us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesAMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   
Fair value of warrants 282us-gaap_WarrantsAndRightsOutstanding
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesAMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   
Preferred stock [Member] | Series A [Member] | Lender [Member]      
Class of Warrant or Right [Line Items]      
Number of shares 209,451us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesAMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_LenderConcentrationRiskMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   
Date of issue Apr. 29, 2011    
Exercise Price $ 1.07us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesAMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_LenderConcentrationRiskMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   
Expiration date Oct. 31, 2021    
Fair value of warrants 69us-gaap_WarrantsAndRightsOutstanding
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesAMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_LenderConcentrationRiskMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   
Preferred stock [Member] | Series B [Member] | Lender [Member]      
Class of Warrant or Right [Line Items]      
Number of shares 504,004us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesBMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_LenderConcentrationRiskMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   
Date of issue May 31, 2012    
Exercise Price $ 1.07us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesBMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_LenderConcentrationRiskMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   
Expiration date Jun. 01, 2022    
Fair value of warrants 182us-gaap_WarrantsAndRightsOutstanding
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesBMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_LenderConcentrationRiskMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   
Preferred stock [Member] | Series B [Member] | Customer [Member]      
Class of Warrant or Right [Line Items]      
Number of shares 53,757us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesBMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   
Date of issue Nov. 16, 2012    
Exercise Price $ 1.07us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesBMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   
Expiration date Nov. 16, 2019    
Fair value of warrants 31us-gaap_WarrantsAndRightsOutstanding
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesBMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
   
Common Stock [Member]      
Class of Warrant or Right [Line Items]      
Number of shares 621,361us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
   
Exercise Price   $ 1.38us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
 
Fair value of warrants       
Common Stock [Member] | Lender [Member]      
Class of Warrant or Right [Line Items]      
Number of shares 29,466us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ProductOrServiceAxis
= us-gaap_LenderConcentrationRiskMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
   
Date of issue May 31, 2012    
Exercise Price $ 1.38us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ProductOrServiceAxis
= us-gaap_LenderConcentrationRiskMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
   
Expiration date Jun. 01, 2022    
Fair value of warrants       
Common Stock [Member] | Series B [Member] | Investors [Member]      
Class of Warrant or Right [Line Items]      
Number of shares 591,895us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesBMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_InvestorMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
   
Exercise Price $ 1.38us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= us-gaap_SeriesBMember
/ us-gaap_ProductOrServiceAxis
= us-gaap_InvestorMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
   
Expiration period 10 years    
Fair value of warrants       
Senior Lender [Member]      
Class of Warrant or Right [Line Items]      
Warrant liability $ 96us-gaap_DerivativeLiabilities
/ us-gaap_SubsequentEventTypeAxis
= ekso_SeniorLenderMember