Year when the debt instrument is scheduled to be fully repaid.

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Price of a single share of a number of saleable stocks of a company.

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The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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Face (par) amount of debt instrument at time of issuance.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Net number of share options (or share units) granted during the period.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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SHARE CAPITAL (Narrative) (Details) - USD ($)			1 Months Ended		12 Months Ended
SHARE CAPITAL (Narrative) (Details) - USD ($)	Sep. 13, 2018	Dec. 07, 2016	May 22, 2018	Jul. 24, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 02, 2016	Dec. 14, 2006
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for issuance					7,303,119				23,841,655
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized					$ 1,524,000
Proceeds from Stock Options Exercised					0	$ 0	$ 14,000
Debt Conversion, Converted Instrument, Amount					2,285,000	$ 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	$ 0	$ 213,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition					1 year 2 months 5 days
4.5% Convertible Notes [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Debt Conversion, Converted Instrument, Amount			$ 2,230,000
Debt Conversion, Converted Instrument, Shares Issued			2,613,636
Principal amount		$ 54,052,000	$ 3,423,000	$ 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]
Principal amount		$ 40,186,000
Seven Point Five Percentage Convertible Notes [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Debt Conversion, Converted Instrument, Shares Issued							1,176.4706
Principal 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]
Principal amount				$ 8,550,000
Debt Instrument Maturity Year				2022 years
Officers And Certain Employees [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, Net of Forfeitures	2,360,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 0.51
Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Grant Date Fair Value					$ 1,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	4,000,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price					$ 0.56
Non-executive Officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Strike Price	$ 0.51
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 Volatility Rate	64.30%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	2.90%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	6,360,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%
Option to purchase shares of common stock [Member] \| Executive Officer [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	$ 0.56