v3.8.0.1
Convertible notes (Schedule of Convertible Notes) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Short-term Debt [Line Items]      
Principal amount $ 1,149    
Interest rate 5.00%    
Convertible Notes [Member]      
Short-term Debt [Line Items]      
Principal amount $ 1,149    
Payments of debt issuance costs   $ 44 $ 106
Convertible notes measured at fair value     2,169
Total principal amount converted   $ 1,114 $ 35
Total shares issued from conversion of debt   1,343,425 51,511
Convertible Notes [Member] | LG Capital Funding, LLC [Member]      
Short-term Debt [Line Items]      
Principal amount $ 231    
Issue date Oct. 06, 2015    
Maturity date Oct. 06, 2016    
Interest rate 8.00%    
Conversion discount rate [1] 35.00%    
Convertible Notes [Member] | JSJ Investments INC [Member]      
Short-term Debt [Line Items]      
Principal amount $ 150    
Issue date Mar. 06, 2015    
Maturity date [2] Mar. 12, 2015    
Interest rate 12.00%    
Conversion discount rate [1] 43.00%    
Cash Redemption Premium On Debt Instrument 150.00%    
Convertible Notes [Member] | Crown Bridge Partner, LLC [Member]      
Short-term Debt [Line Items]      
Principal amount $ 46    
Issue date Nov. 09, 2015    
Maturity date Aug. 25, 2016    
Interest rate 5.00%    
Conversion discount rate [1] 42.00%    
Convertible Notes [Member] | Service Trading Company, LLC [Member]      
Short-term Debt [Line Items]      
Principal amount $ 105    
Issue date Nov. 06, 2016    
Maturity date Nov. 06, 2016    
Interest rate 8.00%    
Conversion discount rate [1] 35.00%    
Convertible Notes [Member] | Adar Bays, LLC [Member]      
Short-term Debt [Line Items]      
Principal amount $ 158    
Issue date Nov. 06, 2015    
Maturity date Nov. 06, 2016    
Interest rate 8.00%    
Conversion discount rate [1] 35.00%    
Convertible Notes [Member] | Vis Vires Group, INC [Member]      
Short-term Debt [Line Items]      
Principal amount $ 159    
Issue date Oct. 06, 2015    
Maturity date Mar. 15, 2016    
Interest rate 8.00%    
Conversion discount rate [1] 39.00%    
Convertible Notes [Member] | Black Forest Capital, LLC [Member]      
Short-term Debt [Line Items]      
Principal amount $ 300    
Issue date Jul. 17, 2015    
Maturity date Jul. 17, 2016    
Interest rate 12.00%    
Conversion discount rate [1] 42.00%    
[1] The rate is the discount to the lowest closing bid price of the Company’s ordinary shares for the 10 or 20 days prior to the date of conversion or execution of the convertible note agreements, as the case may be.
[2] At any time before, on and after the maturity date, this note has a cash redemption premium of 150%.