STOCK CAPITAL - Additional information (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 132 Months Ended
Jun. 11, 2019
May 23, 2019
Feb. 22, 2019
Jun. 06, 2018
Mar. 06, 2018
Jul. 13, 2017
Mar. 06, 2017
Mar. 26, 2019
Aug. 28, 2018
Nov. 20, 2017
Jul. 26, 2017
Mar. 06, 2017
Jun. 06, 2014
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Proceeds from issuance of Common stock, net                               $ 59,000,000      
Fixed Commission Percentage 3.00%                                    
Proceeds from Warrant Exercises       $ 12,040,000                   $ 0 $ 11,994,000 0 $ 11,994,000    
Stock or Unit Option Plan Expense                           $ 53,000 $ 136,000 365,000 363,000    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       2,458,201                              
Share-based Compensation                               $ 390,000 $ 363,000    
2015 Warrant                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Proceeds from Warrant Exercises       $ 12,291,000                              
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 5                              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       2,458,201                              
New Warrant [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 9                              
Legal Advisor [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross               5,908                      
Restricted Stock [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Stock Issued During Period, Shares, Issued for Services     3,501                                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                               45,294      
Share-based Compensation                               $ 84,000      
Director [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross                                     402,778
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price                                     $ 1.34
Chief Operating Officer [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Investment Warrants, Exercise Price                         $ 0.75            
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross             47,847                        
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price             $ 4.18                        
Class of Warrant or Right, Outstanding                         13,333            
Chief Operating Officer [Member] | Restricted Stock [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                       35,885              
Chief Executive Officer [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross                                   369,619  
Shares Issued, Price Per Share                                   $ 2.45  
Chief Executive Officer [Member] | Restricted Stock [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                     31,185                
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage         25.00%           25.00%                
Chief Financial Officer [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross                   93,686                  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price                   $ 4.30                  
Chief Financial Officer [Member] | Restricted Stock [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                   25,000                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage                   25.00%                  
Chief Commercial Officer [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross                 200,000                    
Shares Issued, Price Per Share                 $ 3.98                    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage                 25.00%                    
Global Share Option Plan 2014 and U S Stock Option and Incentive Plan 2014 [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized                           4,000,000   4,000,000      
Common Stock, Capital Shares Reserved for Future Issuance                           2,283,308   2,283,308      
Global Plan Under 2014, Former Director                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross   4,167                                  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price   $ 0.75                                  
Mr. Yablonka [Member] | Executive Vice President, Chief Business Officer and Director [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross           5,543                          
At The Market Offering [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Proceeds from issuance of Common stock, net $ 20,000                                    
Private Placement [Member] | Restricted Stock [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price                     $ 4.81                
Private Placement [Member] | Chief Executive Officer [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross                     41,580