EXTINGUISHMENT OF DEBT (Narrative) (Details) - USD ($) $ in Thousands, shares in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Nov. 30, 2013	Nov. 22, 2013
Extinguishment of Debt [Line Items]
Gain (loss) on extinguishment of debt				$ 0	$ 11	$ 985
Deferred finance costs								$ 8,400
Convertible Debt [Member]
Extinguishment of Debt [Line Items]
Write off of deferred financing costs	$ 2,400		$ 300
Write-off of embedded derivative on extinguishment of debt	26,600		3,700
Write-off of unamortized debt discount	7,300		800
Gain (loss) on extinguishment of debt	4,300		$ (1,700)
Common Stock [Member]
Extinguishment of Debt [Line Items]
Conversion of convertible debt (in shares)						0.6
Senior Secured Notes Due 2013 [Member]
Extinguishment of Debt [Line Items]
Write off of deferred financing costs		$ 1,600
Convertible Debt [Member]
Extinguishment of Debt [Line Items]
Extinguishment of debt	48,500					$ 6,400
Senior Notes [Member]
Extinguishment of Debt [Line Items]
Debt, face amount	$ 61,100
Senior Secured Notes Due 2015 [Member]
Extinguishment of Debt [Line Items]
Debt, face amount							$ 61,100