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NATURE OF OPERATIONS (Details) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Aug. 04, 2014
Subsidiary, Sale of Stock [Line Items]        
Per share price     $ 12  
Additional ordinary shares purchased     937,500  
Procceds from Initial public offering, net of issuance costs $ 78,775 $ 78,775  
Outstanding promissory note converted into ordinary shares     5,444,825  
Accumulated deficit $ 138,118   $ 127,464  
IPO [Member]        
Subsidiary, Sale of Stock [Line Items]        
Ordinary shares issued     6,250,000  
Per share price     $ 12  
Procceds from Initial public offering, net of issuance costs     $ 78,800  
Controlling Shareholder [Member]        
Subsidiary, Sale of Stock [Line Items]        
Percentage of acquired shares       100.00%