Summary of Significant Accounting Policies (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013	Sep. 30, 2013	Sep. 30, 2012
Numerator:
Net income (loss) available to common shareholders	$ (26,200)	$ 19,470	$ 21,335	$ (47,534)	$ (21,945)
Effect of dilutive securities
Change in fair value of derivative liability Series C and D preferred stock and debentures	(2,620)	1,036		(4,769)	(13,262)
Change in fair value of derivative liability - warrants	92	4,897		3,503	5,818
Change in fair value of hybrid financial instruments	(24,165)	6,353		(46,959)	11,958
Interest expense on convertible debt	0	(10)		16	(4,407)
Denominator
Weighted average shares used to compute basic income (loss) per common share (in shares)	4,984,827,279	1,510,797,881		3,823,483,604	1,075,605,167
Effect of dilutive securities:
Denominator for diluted Income (loss) per common share (in shares)	4,984,827,279	8,475,377,392		3,823,483,604	1,075,605,167
Basic income (loss) per common share (in dollars per share)	$ (0.005)	$ 0.013		$ (0.013)	$ (0.020)
Diluted income (loss) per common share (in dollars per share)	$ (0.005)	$ 0.004	$ 0.007	$ (0.013)	$ (0.020)
Numerator [Member]
Numerator:
Net income (loss) available to common shareholders	(26,245)	19,470		(48,276)	(21,945)
Effect of dilutive securities
Change in fair value of derivative liability Series C and D preferred stock and debentures	0	1,036		0	0
Change in fair value of derivative liability - warrants	0	4,897		0	0
Change in fair value of hybrid financial instruments	0	6,353		0	0
Interest expense on convertible debt	0	(10)			0
Numerator for diluted income (loss) per common share	$ (26,245)	$ 31,746		$ (48,276)	$ (21,945)
Denominator [Member]
Denominator
Weighted average shares used to compute basic income (loss) per common share (in shares)	4,984,827,279	1,510,797,881		3,823,483,604	1,075,605,167
Effect of dilutive securities:
Derivative warrants (in shares)	0	1,091,953,786		0	0
Convertible debentures (in shares)	0	5,129,818,595		0	0
Convertible preferred stock (in shares)	0	742,807,130		0	0
Denominator for diluted Income (loss) per common share (in shares)	4,984,827,279	8,475,377,392		3,823,483,604	1,075,605,167
Basic income (loss) per common share (in dollars per share)	$ (0.005)	$ 0.013		$ (0.013)	$ (0.020)
Diluted income (loss) per common share (in dollars per share)	$ (0.005)	$ 0.004		$ (0.013)	$ (0.020)