Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Change in Accounting Estimate [Line Items]
Derivative Financial Instruments - warrants	$ 620	$ 3,687
Derivative Financial Instruments - Series C and D	296	2,147
Total Liabilities	42,001	75,575
Accumulated deficit	(236,910)	(264,630)
Total shareholders’ deficit	(41,860)	(74,724)	(75,654)
Scenario, Previously Reported [Member]
Change in Accounting Estimate [Line Items]
Derivative Financial Instruments - warrants	684
Derivative Financial Instruments - Series C and D	23,606
Debentures payable - carried at fair value	257,451
Total Liabilities	284,576
Accumulated deficit	(479,485)
Total shareholders’ deficit	(284,435)
Scenario, Adjustment [Member]
Change in Accounting Estimate [Line Items]
Derivative Financial Instruments - warrants	(64)
Derivative Financial Instruments - Series C and D	(23,310)
Debentures payable - carried at fair value	(219,201)
Total Liabilities	(242,575)
Accumulated deficit	242,575
Total shareholders’ deficit	242,575
Restatement Adjustment [Member]
Change in Accounting Estimate [Line Items]
Derivative Financial Instruments - warrants	620
Derivative Financial Instruments - Series C and D	296
Debentures payable - carried at fair value	38,250
Total Liabilities	42,001
Accumulated deficit	(236,910)
Total shareholders’ deficit	$ (41,860)