Financing (Details 3) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Face Value	$ 4,665us-gaap_PreferredStockValue	$ 4,680us-gaap_PreferredStockValue
Carrying Value	4,665us-gaap_PreferredStockValueOutstanding	4,680us-gaap_PreferredStockValueOutstanding
Embedded Conversion Feature	1	5
Common Stock Shares (in shares)	48,093,815	48,248,454
Series C Convertible Preferred Stock [Member]
Debt Instrument [Line Items]
Face Value	4,317	4,332
Carrying Value	4,317	4,332
Embedded Conversion Feature	1	5
Common Stock Shares (in shares)	44,505,155	44,659,794
Series D Convertible Preferred Stock [Member]
Debt Instrument [Line Items]
Face Value	348	348
Carrying Value	348	348
Embedded Conversion Feature	$ 0	$ 0
Common Stock Shares (in shares)	3,588,660	3,588,660

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

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Amount of a favorable spread to a debt holder between the amount of debt being converted and the value of the securities received upon conversion. This is an embedded conversion feature of convertible debt issued that is in-the-money at the commitment date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Value of all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by shareholders, which is net of related treasury stock. May be all or a portion of the number of preferred shares authorized. These shares represent the ownership interest of the preferred shareholders.

+ References

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