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SHARE CAPITAL (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Dec. 07, 2016
Oct. 12, 2015
Jul. 24, 2017
Jun. 24, 2017
Dec. 31, 2016
Mar. 23, 2015
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 02, 2016
Dec. 14, 2006
[1]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Common stock available for issuance             2,554,075       13,841,655
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total           1,909,000          
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total             $ 130,000        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition             6 months 14 days        
Proceeds from Stock Options Exercised             $ 14,000 $ 534,000    
Debt Conversion, Converted Instrument, Amount             $ 16,263,000        
Debt Conversion, Converted Instrument, Shares Issued 23,846,735           11,239,641        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value             $ 0 $ 213,000 $ 675,000    
Four Point Five Percentage Convertible Notes [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Debt Instrument, Interest Rate, Stated Percentage 4.50%     4.50%              
Debt Conversion, Converted Instrument, Amount $ 54,052,000       $ 54,100,000            
Debt Instrument, Face Amount     $ 9,000,000 $ 9,000,000              
Debt Instrument Maturity Year       2018 years              
Convertible Notes Due Two Thousand Twenty One [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Debt Conversion, Converted Instrument, Amount 40,186,000                    
Debt Instrument, Face Amount $ 40,186,000                    
Seven Point Five Percentage Convertible Notes [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Debt Instrument, Interest Rate, Stated Percentage       0.00%     7.50%     7.50%  
Debt Conversion, Converted Instrument, Shares Issued         1,176.4706            
Debt Instrument, Face Amount       $ 10,000,000           $ 22,500,000  
Debt Instrument Maturity Year       2021 years              
Four Point Five Percentage Convertible Notes One [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Debt Instrument, Interest Rate, Stated Percentage     4.50% 4.50%              
Debt Instrument, Face Amount     $ 8,550,000 $ 8,550,000              
Debt Instrument Maturity Year     2022 years 2022 years              
Common Stock [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Common stock issued   5,649,079           23,846,735 5,649,079    
Option to purchase shares of common stock [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period           10 years          
Share Based Compensation Arrangement By Share Based Payment Award Grant Date Fair Value           $ 1,900,000          
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate           0.00%          
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate           0.00%          
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate           1.60%          
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price           $ 1.72          
Option to purchase shares of common stock [Member] | Vest on the first anniversary of the grant date [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage           25.00%          
[1] The total intrinsic value of options exercised during the years ended December 31, 2015, 2016 and 2017, was approximately $675,000, $213,000 and $0, respectively.