The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 20

-Subparagraph a (1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Investments in ADVENTRX Pharmaceuticals (Details) (USD $)	Dec. 31, 2012	Jun. 06, 2012	Oct. 11, 2011	Apr. 08, 2011
SynthRx, Inc. [Member]
Schedule of Equity Method Investment [Line Items]
Equity investment, ownership percentage (in hundredths)				19.10%
ADVENTRX Pharmaceuticals [Member]
Schedule of Equity Method Investment [Line Items]
Common stock received in acquiring company upon acquisition of equity method investee (in shares)				126,000
Proceeds from sale of common stock in acquiring entity		$ 17,900	$ 112,200
Additional shares of common stock held in an escrow potentially issuable (in shares)		38,196
Additional shares of common stock potentially issuable from development milestones, maximum (in shares)	2,900,000