CONVERTIBLE NOTES (Narrative) (Details) - USD ($)		1 Months Ended					12 Months Ended
	Dec. 07, 2016	Jul. 31, 2017	Jul. 24, 2017	Jun. 24, 2017	Apr. 30, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 02, 2016	Sep. 18, 2013
Number of shares for basis conversion											173.6593
Net proceeds from issuance of convertible notes			$ 9,500,000				$ 9,542,000	$ 19,681,000
Principal amount, related to the initial purchaser's over-allotment option											$ 9,000,000
Debt Conversion, Converted Instrument, Amount							16,263,000
Gain (Loss) on Extinguishment of Debt							$ (1,325,000)	14,063,000
Percentage Of Excess Shares Outstanding							20.00%
Debt Conversion, Converted Instrument, Shares Issued	23,846,735						11,239,641
Repayments of Convertible Debt							$ 10,961,000
Stockholders Approval Description For Common Stock Issuance					the issuance of shares in excess of 20% of its outstanding shares. On April 12, 2017, the Companys stockholders approved the issuance of shares of the Companys Common Stock in excess of 20% of the Companys outstanding shares of Common Stock to settle conversion requests and pay interest on the Companys issued 7.5% convertible notes.
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net							$ (38,061,000)	$ (6,473,000)
Convertible Notes Payable [Member]
Principal amount											$ 69,000,000
Seven Point Five Percentage Convertible Notes [Member]
Principal amount				$ 10,000,000						$ 22,500,000
Maturity						Nov. 15, 2021
Interest rate				0.00%			7.50%			7.50%
Conversion price per share							$ 0.85
Base value for conversion rate						$ 1,000	$ 1,000
Gain (Loss) on Extinguishment of Debt							14,100,000
Maximum Debt Instrument Convertible Conversion Share Number						$ 1,787.3100
Debt Instrument, Redemption, Description						Prior to the maturity date, the Company may redeem in cash: a) any or all of the 2016 Notes if the last reported sale price of the common stock for at least 20 trading days (whether or not consecutive) during the period of 30 consecutive trading days exceeds 150% of the conversion price on each applicable trading day, or b) all of the 2016 Notes then outstanding if the aggregate principal amount of the 2016 Notes then outstanding is less than 15% of the aggregate principal amount of the notes issued.
Debt Conversion, Converted Instrument, Shares Issued						1,176.4706
Debt Instrument Maturity Year				2021 years
Four Point Five Percentage Convertible Notes [Member]
Principal amount			9,000,000	$ 9,000,000
Interest rate	4.50%			4.50%
Debt Conversion, Converted Instrument, Amount	$ 54,052,000					$ 54,100,000
Debt Instrument Maturity Year				2018 years
Convertible Notes Due Two Thousand Twenty One [Member]
Principal amount	40,186,000
Debt Conversion, Converted Instrument, Amount	$ 40,186,000
Convertible Notes 2013 [Member]
Interest rate											4.50%
Conversion price per share											$ 5.76
Four Point Five Percentage Convertible Notes 2013 [Member]
Debt Conversion, Converted Instrument, Amount		$ 9,000,000					$ 5,900,000
Seven Point Five Percentage Convertible Notes 2016 [Member]
Principal amount			10,000,000
Debt Conversion, Converted Instrument, Shares Issued							8,827,624
Repayments of Convertible Debt							$ 11,000,000
Long-term Debt, Gross							59,100,000
Debt Conversion, Original Debt, Amount							$ 13,600,000
Four Point Five Percentage Convertible Notes One [Member]
Principal amount			$ 8,550,000	$ 8,550,000
Interest rate			4.50%	4.50%
Repayments of Convertible Debt			$ 275,000
Debt Instrument Maturity Year			2022 years	2022 years