| Property, Plant and Equipment [Table Text Block] |
| | | December 31, | | | | | 2013 | | | 2012 | | | | | U.S. $ in thousands | | | | | | | | | | | Cost: | | | | | | | | | | Office furniture and equipment | | | 18 | | | | 9 | | | Computer software and electronic equipment | | | 149 | | | | 120 | | | Laboratory equipment | | | 482 | | | | 437 | | | Leasehold improvements | | | 716 | | | | 690 | | | | | | 1,365 | | | | 1,256 | | | Accumulated depreciation: | | | | | | | | | | Office furniture and equipment | | | 5 | | | | 4 | | | Computer software and electronic equipment | | | 116 | | | | 106 | | | Laboratory equipment | | | 350 | | | | 306 | | | Leasehold improvements | | | 636 | | | | 593 | | | | | | 1,107 | | | | 1,009 | | | | | | | | | | | | | Depreciated cost | | | 258 | | | | 247 | | |