| Property, Plant and Equipment [Table Text Block] |
| | | | December 31, | | | | | | 2014 | | 2013 | | | | | | U.S. $ in thousands | | | Cost: | | | | | | | | | | Office furniture and equipment | | | | 73 | | | 18 | | | Computer software and electronic equipment | | | | 159 | | | 149 | | | Laboratory equipment | | | | 576 | | | 482 | | | Leasehold improvements | | | | 716 | | | 716 | | | | | | | 1,524 | | | 1,365 | | | Accumulated depreciation: | | | | | | | | | | Office furniture and equipment | | | | 8 | | | 5 | | | Computer software and electronic equipment | | | | 132 | | | 116 | | | Laboratory equipment | | | | 404 | | | 350 | | | Leasehold improvements | | | | 667 | | | 636 | | | | | | | 1,211 | | | 1,107 | | | Depreciated cost | | | | 313 | | | 258 | | |