TAXES ON INCOME (Tables)
 12 Months Ended
Dec. 31, 2017
Income Tax Disclosure [Abstract]  
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Significant components of the Company's deferred tax assets are as follows:
 
 
 
December 31,
 
 
 
2017
 
2016
 
 
 
 
 
 
 
 
 
 
 
U.S. $ in thousands
 
 
 
 
 
 
 
 
 
Operating loss carryforward
 
$
51,107
 
$
39,967
 
 
 
 
 
 
 
 
 
Net deferred tax asset before valuation allowance
 
 
14,090
 
 
13,333
 
Valuation allowance
 
 
(14,090)
 
 
(13,333)
 
Net deferred tax asset
 
$
-
 
$
-
 
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Loss from continuing operations, before taxes on income, consists of the following:
 
 
 
Year ended December 31,
 
 
 
2017
 
2016
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. $ in thousands
 
 
 
 
 
 
 
 
 
United States
 
$
(2,532)
 
$
(1,451)
 
Israel
 
 
(2,420)
 
 
(3,531)
 
 
 
$
(4,952)
 
$
(4,982)