Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Change in Accounting Estimate [Line Items]
Decrease in liability, Derivative financial instrument - warrants	$ 20
Decrease in liability, Derivative financial instrument - Series C and D Convertible Preferred Stock	23,278
Decrease in liability, Debentures payable - carried at fair value	219,136
Gain from change in fair value, Derivative financial instrument - warrants	20
Gain from change in fair value,Derivative financial instrument - Series C and D Convertible Preferred Stock	23,278
Gain from change in fair value, Debentures payable - carried at fair value	$ 219,136