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Derivative Warrant Liabilities - Schedule of Liabilities Measured on a Recurring Basis (Details)
$ in Thousands
 6 Months Ended
Jun. 30, 2017
USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Beginning balance $ 313
Revaluation of warrants (275)
Exercise warrants (see note 7(b)) [1]
Ending balance $ 38
[1] In March 2017, an institutional holder executed a cashless exercise of 768 warrants and 359 shares of common stock were issued in connection therewith.