LONG-TERM DEBT (8.00% Convertible Senior Notes Issued in 2013) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	12 Months Ended			0 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jul. 19, 2013 8.00% Convertible Senior Unsecured Notes, Issued in 2013 [Member]	Dec. 31, 2013 8.00% Convertible Senior Unsecured Notes, Issued in 2013 [Member]	Dec. 31, 2013 8.00% Convertible Senior Unsecured Notes, Issued in 2013 [Member]	May 20, 2013 8.00% Convertible Senior Unsecured Notes, Issued in 2013 [Member]	Dec. 31, 2012 8.00% Convertible Senior Unsecured Notes, Issued in 2013 [Member]
Debt Instrument [Line Items]
Debt, principal amount	$ 745,348,000	$ 800,121,000			$ 46,971,000	$ 46,971,000	$ 54,600,000
Conversion price per share of common stock					$ 0.73	$ 0.73	$ 0.80
Number of shares of common stock convertible into						1,250
Maturity date						Apr. 01, 2028
Loan interest rate							8.00%
Interest rate, payable in cash					5.75%	5.75%
Interest rate, payable in additional notes					2.25%	2.25%
Average closing price						$ 0.20
Percentage of principal, premium						32.00%
Percentage of debt that is convertible						15.00%
Price trigger for convertibility						$ 0.50
Percentage of principal converted				12.90%
Principal converted	49,757,000	2,000,000	1,000,000	7,000,000	1,000,000
Conversion of notes into shares of common stock				14.3	0.6
Number of days for calculating average price						30 days
Conversion premium percentage						25.00%
Value of stock issuable under covenant						3,590,200
Percentage of principal issuable under covenant					5.00%	5.00%
Amount of default, definition per agreement						10,000,000
Percentage of debt holders required for acceleration of maturity						25.00%
Senior notes	669,282,000	751,029,000			26,291,000	26,291,000	27,890,000
Compound embedded derivative liability							56,752,000
Fair value of debt							$ 84,642,000