Schedule of Stockholders Equity Note, Warrants or Rights [Table Text Block] |
| o. | The table below summarizes the outstanding warrants as of December 31, 2016: | | | Warrants | | | | | | | | | | outstanding as of | | | Exercise | | | | | | December 31, 2016 | | | price $ | | Expiration date | | September 2014 PPM | | | 56,764 | | | | 8.56 | | September 23, 2018 | | September 2014 PPM-Warrant Replacement Agreement | | | 264,012 | | | | 8.56 | | September 23, 2018 | | February 2015 PPM A (*) | | | 4,630 | | | | 4.32 | | November 25,2015 | | February 2015 PPM B | | | 125,903 | | | | 5.40 | | February 25,2018 | | February 2015 PPM A-Finders | | | 13,415 | | | | 3.24 | | February 25,2018 | | February 2015 PPM - C Finders | | | 3,355 | | | | 5.40 | | February 25,2018 | | February 2015 PPM - B 2nd closing | | | 30,866 | | | | 5.40 | | March 16, 2018 | | July 2015 PPM - 2015 Series A Warrants - 1st Closing | | | 131,966 | | | | 6.66 | | July 23, 2017 | | July 2015 PPM - 2015 Series B Warrants - 1st Closing | | | 138,910 | | | | 7.20 | | July 23, 2018 | | July 2015 PPM - 2015 Series A Warrants (Finder's warrants) | | | 17,213 | | | | 6.66 | | August 28, 2017 | | July 2015 PPM - 2015 Series B Warrants (Finder's warrants) | | | 17,213 | | | | 7.20 | | August 28, 2018 | | July 2015 PPM - 2015 Series A Warrants-2nd Closing | | | 93,077 | | | | 6.66 | | August 28, 2017 | | July 2015 PPM - 2015 Series B Warrants-2nd Closing | | | 93,077 | | | | 7.20 | | August 28, 2018 | | July 2015 PPM (PA) - 1st Closing | | | 23,613 | | | | 5.40 | | July 23, 2018 | | July 2015 PPM (PA) - 2015 Series A Warrants - 1st Closing | | | 11,807 | | | | 6.66 | | July 23, 2017 | | July 2015 PPM (PA) – 2015 Series B Warrants – 1st Closing | | | 11,807 | | | | 7.20 | | July 23, 2018 | | July 2015 PPM (PA) - 2nd Closing | | | 1,341 | | | | 5.40 | | August 28, 2018 | | July 2015 PPM (PA) - 2015 Series A Warrants - 2nd Closing | | | 671 | | | | 6.66 | | August 28, 2017 | | July 2015 PPM (PA) - 2015 Series B Warrants - 2nd Closing | | | 671 | | | | 7.20 | | August 28, 2018 | | November 2015 PPM - 2015 Series A Warrants (Finder's warrants) | | | 32,010 | | | | 6.66 | | March 19, 2017 | | November 2015 PPM - 2015 Series B Warrants (Finder's warrants) | | | 13,720 | | | | 7.74 | | November 19, 2018 | | November 2015 PPM - Series A Warrants | | | 297,445 | | | | 6.66 | | March 19, 2017 | | November 2015 PPM - Series B Warrants | | | 127,485 | | | | 7.74 | | November 19, 2018 | | March 2016 PPM – Warrants | | | 1,528,333 | | | | 4.50 | | March 8, 2021 | | March 2016 PPM – (Finder’s Warrants) | | | 73,333 | | | | 4.50 | | March 8, 2021 | | March 2016 Public Offering - Warrants | | | 666,666 | | | | 4.50 | | March 8, 2021 | | March 2016 Public Offering – Banker Warrants | | | 143,333 | | | | 5.625 | | March 8, 2021 | | August 2016 – Settlement - Warrants | | | 300,000 | | | | 4.50 | | March 8, 2021 | | | | | | | | | | | | | Total outstanding | | | 4,222,637 | | | | | | | | | (*) | Warrants for which cash has been received by the Company but no securities issued. |
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Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
Transactions related to the grant of options to employees, directors and non-employees under the above plans during the year ended December 31, 2016 were as follows: | | | | | | Weighted | | | | | | | | Weighted | | Average | | | | | | | | average | | remaining | | Aggregate | | | | Number of | | exercise | | contractual | | Intrinsic | | | | options | | price | | life | | value | | | | | | $ | | Years | | $ | | | | | | | | | | | | Options outstanding at beginning of year | | | 587,678 | | | 16.87 | | | 5.8 | | | 1,264 | | Options granted | | | 67,667 | | | 4.80 | | | | | | | | Options exercised | | | - | | | - | | | | | | | | Options expired | | | 60,218 | | | 6.23 | | | | | | | | Options forfeited | | | 11,973 | | | 18.29 | | | | | | | | | | | | | | | | | | | | | | Options outstanding at end of year | | | 583,334 | | | 16.53 | | | 4.87 | | | 7 | | | | | | | | | | | | | | | | Options vested and expected to vest at end of year | | | 529,514 | | | 17.42 | | | 4.27 | | | 7 | | | | | | | | | | | | | | | | Exercisable at end of year | | | 362,560 | | | 23.12 | | | 4.81 | | | 7 | |
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