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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.

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