Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Change in Accounting Estimate [Line Items]
Derivative Financial Instruments - warrants	$ 2us-gaap_WarrantsAndRightsOutstanding	$ 620us-gaap_WarrantsAndRightsOutstanding
Derivative Financial Instruments - Series C and D	6	296
Debentures payable - carried at fair value	37,384us-gaap_UnsecuredDebtCurrent	38,250us-gaap_UnsecuredDebtCurrent
Total Liabilities	39,551us-gaap_LiabilitiesCurrent	42,001us-gaap_LiabilitiesCurrent
Accumulated deficit	(239,377)	(236,910)
Total shareholders' deficit	(42,947)us-gaap_StockholdersEquity	(41,860)us-gaap_StockholdersEquity	(74,724)us-gaap_StockholdersEquity
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
Restated [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)

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Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

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Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

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