Preferred Stock (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Preferred Stock, shares authorized	7,500us-gaap_PreferredStockSharesAuthorized	7,500us-gaap_PreferredStockSharesAuthorized
Preferred Stock, shares issued	53us-gaap_PreferredStockSharesIssued	53us-gaap_PreferredStockSharesIssued
Preferred Stock, shares outstanding	53us-gaap_PreferredStockSharesOutstanding	53us-gaap_PreferredStockSharesOutstanding
Preferred Stock stated value (in dollars per share)	$ 0.0001	$ 0.0001
Accrued dividends	$ 45us-gaap_DividendsPayableCurrent	$ 40us-gaap_DividendsPayableCurrent
Conversion price below this fair value of the common stock (in dollars per share)	$ 1.16
Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, shares authorized	5,000,000
Series B-1 Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, shares authorized	100
Preferred Stock, shares issued	0
Preferred Stock, shares outstanding	0
Series A-2 Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, shares authorized	7,500
Preferred Stock, shares issued	53
Preferred Stock, shares outstanding	53
Preferred Stock stated value (in dollars per share)	$ 7,500
Conversion of preferred stock (in dollars per share)	$ 2.9835	$ 2.9844
Convertible preferred stock, shares issued upon conversion	2,514
Preferred stock, cumulative dividend percentage rate (per annum)	5.00%
Accrued dividends	$ 45
Series D Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, shares authorized	4,000
Preferred Stock, shares issued	0
Preferred Stock, shares outstanding	0

Conversion Price Below this Fair Value of the Common Stock, Per Share

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- Definition

Stock Issued During Period, Conversion of Convertible Securities, Price

+ References

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- Definition

Number of shares issued for each share of convertible preferred stock that is converted.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

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- Definition

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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-Section 02

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-Glossary Current Liabilities

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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- Definition

Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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- Definition

Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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