Number of warrants or rights outstanding.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Article 4

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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- Definition

Number of shares under non-option equity instrument agreements for which rights to exercise are expected to expire in the future.

+ References

No definition available.

+ Details

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- Definition

The percentage of maximum number of shares that are reserved for issuance in accordance with the plan as a proportion of outstanding capital stock.

+ References

No definition available.

+ Details

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Additional Paid-In Capital (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants outstanding (in shares)	19,977,743	19,977,743	19,977,743
Unrecognized compensation expense related to unvested options	$ 24
Weighted average compensation recognition period	2 months 19 days
Number of awards cancelled	351,340
In December 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants expected to expire in future (in shares)	2,091,275
Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of common shares reserved for issuance	10.00%
Weighted average compensation recognition period	2 months 19 days
2012 Offering [Member] \| In October 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants expected to expire in future (in shares)	15,219,802
2012 Offering [Member] \| In July 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants expected to expire in future (in shares)	2,666,666
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to unvested options	$ 2,932
Weighted average compensation recognition period	1 year 11 months 16 days