Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Equity (Details Textual)

v3.10.0.1
Equity (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
Dec. 31, 2017
Jan. 31, 2017
Oct. 31, 2015
Sep. 30, 2015
Dec. 31, 2014
Mar. 31, 2014
Nov. 28, 2013
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 03, 2015
Ordinary Shares [Member]                      
Statement Line Items [Line Items]                      
Ordinary shares par value                 $ 0.25 $ 0.25  
Number of shares authorized 80,000,000             80,000,000 80,000,000    
Ordinary Shares [Member] | Shareholder [Member]                      
Statement Line Items [Line Items]                      
Number of shares authorized                     80,000,000
NIS [Member] | Ordinary Shares [Member]                      
Statement Line Items [Line Items]                      
Ordinary shares par value                     $ 0.25
Authorized share capital                     $ 10,000,000
Increased authorized share capital                     $ 20,000,000
Series Seven [Member]                      
Statement Line Items [Line Items]                      
Registered warrants           9,907,500          
Warrants were exercisable into ordinary shares           396,300          
Share premium           $ 258          
Series Eleven [Member]                      
Statement Line Items [Line Items]                      
Fair value of warrants issued                 $ 126 $ 307  
Registered warrants               37,372,500      
Warrants were exercisable into ordinary shares               1,494,900      
Warrants expired date               Oct. 31, 2017      
Series Eleven [Member] | NIS [Member]                      
Statement Line Items [Line Items]                      
Warrants exercise price               $ 9.80      
Series Twelve [Member]                      
Statement Line Items [Line Items]                      
Fair value of warrants issued                 291 303  
Registered warrants               1,470,000      
Warrants were exercisable into ordinary shares               1,470,000      
Warrants expired date               Oct. 31, 2017      
Series Twelve [Member] | NIS [Member]                      
Statement Line Items [Line Items]                      
Warrants exercise price               $ 15.29      
Series Ten [Member]                      
Statement Line Items [Line Items]                      
Fair value of warrants issued                 $ 146 $ 240  
Registered warrants               39,042,000      
Warrants were exercisable into ordinary shares               1,561,680      
Warrants expired date               Oct. 31, 2017      
Series Ten [Member] | NIS [Member]                      
Statement Line Items [Line Items]                      
Warrants exercise price               $ 9.85      
September 2015 Financing [Member]                      
Statement Line Items [Line Items]                      
Warrants to purchase shares issued               2,275,863      
Cash issuance costs               $ 789      
January 2017 Financing [Member]                      
Statement Line Items [Line Items]                      
Fair value of warrants issued   $ 1,868                  
Additional issuance costs   $ 188                  
October 2015 Financing [Member]                      
Statement Line Items [Line Items]                      
Warrants to purchase shares issued               998,276      
Cash issuance costs               $ 525      
ADS [Member]                      
Statement Line Items [Line Items]                      
Ordinary shares 138,890             138,890      
Additional ordinary shares 69,445                    
Warrants term   five and a half years                  
Warrants exercise price   $ 2.25                  
ADS [Member] | Placement Agent Warrants [Member]                      
Statement Line Items [Line Items]                      
Ordinary shares   250,000                  
Warrants to purchase shares issued   125,000                  
Cash issuance costs   $ 621                  
Warrants exercise price   $ 2.25                  
ADS [Member] | September 2015 Financing [Member]                      
Statement Line Items [Line Items]                      
Exercisable price per share       $ 5.25              
Equivalent to ordinary share price per share       $ 2.625              
Fair value of warrants issued       $ 3,167              
Warrants term       Five years              
ADS [Member] | October 2015 Financing [Member]                      
Statement Line Items [Line Items]                      
Exercisable price per share     $ 5.25                
Equivalent to ordinary share price per share     $ 2.625                
Fair value of warrants issued     $ 1,147                
Warrants term     Half years                
ADS [Member] | December 2014 Financing [Member]                      
Statement Line Items [Line Items]                      
Exercisable price per share         $ 4.45            
Equivalent to ordinary share price per share         $ 2.225            
Fair value of warrants issued         $ 1,535            
Warrants term         Five years            
ADS [Member] | March 2014 Financing [Member]                      
Statement Line Items [Line Items]                      
Exercisable price per share           $ 6.43          
Equivalent to ordinary share price per share           $ 3.215          
Fair value of warrants issued           $ 1,098          
Warrants term           Four years          
Direct Offering [Member] | ADS [Member] | September 2015 Financing [Member]                      
Statement Line Items [Line Items]                      
Ordinary shares       2,068,966              
Additional ordinary shares       2,068,966              
Gross proceeds       $ 9,000              
Issued unregistered warrants to purchase       1,034,483              
Ordinary shares issued       4,137,932              
Direct Offering [Member] | ADS [Member] | October 2015 Financing [Member]                      
Statement Line Items [Line Items]                      
Ordinary shares     1,109,196                
Additional ordinary shares     887,356                
Gross proceeds     $ 4,825                
Issued unregistered warrants to purchase     443,678                
Ordinary shares issued     2,218,392                
Private Placement and Accredited Investors [Member] | ADS [Member] | January 2017 Financing [Member]                      
Statement Line Items [Line Items]                      
Sold an aggregate shares   2,500,000                  
Ordinary shares   5,000,000                  
Warrants to purchase additional shares   1,250,000                  
Additional ordinary shares   2,500,000                  
Aggregate purchase price   $ 5,000                  
Placement Agent Warrants [Member] | ADS [Member] | September 2015 Financing [Member]                      
Statement Line Items [Line Items]                      
Warrants to purchase shares issued               103,448      
Ordinary shares issued 206,897             206,897      
Exercisable price per share $ 5.25             $ 5.25      
Equivalent to ordinary share price per share $ 2.625             $ 2.625      
Subject to certain adjustments, for a period               5 years      
Additional issuance costs               $ 317      
Placement Agent Warrants [Member] | ADS [Member] | October 2015 Financing [Member]                      
Statement Line Items [Line Items]                      
Warrants to purchase shares issued               55,460      
Ordinary shares issued 110,920             110,920      
Exercisable price per share $ 5.25             $ 5.25      
Equivalent to ordinary share price per share $ 2.625             $ 2.625      
Subject to certain adjustments, for a period               5 years      
Additional issuance costs               $ 143      
Two Zero One Three Paln [Member]                      
Statement Line Items [Line Items]                      
Description of option agreement             Under the 2013 Plan, the Company may grant its officers, directors, employees and consultants, Stock options, of the Company. Each Stock option granted shall be exercisable at such times and terms and conditions as the Board of Directors may specify in the applicable option agreement, provided that no option will be granted with a term in excess of 10 years.        
Reserved for issuance shares of common stock             1,000,000        
Two Zero One Three Paln [Member] | NIS [Member]                      
Statement Line Items [Line Items]                      
Ordinary shares par value             $ 0.25