Summary of Significant Accounting Policies (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Numerator:
Net income (loss) available to common shareholders	$ (30,372)	$ 124,119	$ (21,284)	$ (41,415)
Numerator for diluted earnings per share- income (loss) available to common stockholders after assumed conversions of debentures and exercise of warrants	$ (30,372)	$ 124,119	$ (21,284)	$ (41,415)
Denominator:
Weighted average shares used to compute basic EPS (in shares)	4,057,691,643	1,148,526,738	3,230,324,614	326,414,797
Denominator for diluted earnings per share-adjusted weighted average shares and assumed conversions and exercise of options (in shares)	4,057,691,643	8,113,106,249	3,230,324,614	326,414,797
Basic earnings per share (in dollars per share)	$ (0.007)	$ 0.11	$ (0.007)	$ (0.13)
Diluted earnings per share (in dollars per share)	$ (0.007)	$ 0	$ (0.007)	$ (0.13)