Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Financial Instruments (Details 1)

v3.8.0.1
Financial Instruments (Details 1) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Disclosure of detailed information about financial instruments [line items]    
Ending Balance $ 7,852  
NIS [Member]    
Disclosure of detailed information about financial instruments [line items]    
Beginning Balance 39,109  
Ending Balance 27,222 $ 39,109
Level 3 (Member) | NIS [Member]    
Disclosure of detailed information about financial instruments [line items]    
Beginning Balance 10,068 16,725
Fair value of warrants at issuance date 7,117  
Purchase of long term investment (3,179)  
Changes in values of warrants exercisable into shares liability (10,148) (6,657)
Ending Balance $ 3,858 $ 10,068