Discontinued Operations The operating results of the Regenerative Medicine - China business (Details) (Regenerative Medicine - China segment [Member], USD $)	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Regenerative Medicine - China segment [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 274,300	$ 55,900
Cost of revenues	(140,600)	(36,000)
Research and development	(378,300)	(112,400)
Research and development	(3,089,900)	(1,408,200)
Research and development	(9,700)	(63,800)
Loss from discontinued operations	$ (3,344,200)	$ (1,564,500)

Disposal Group Including Discontinued Operation Research and Development

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- Definition

Disposal Group Including Discontinued Operation Selling General and Administrative

+ References

No definition available.

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Amount of costs of goods sold attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

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Amount of operating expenses attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of operating income or loss attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 47

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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-Name Accounting Standards Codification

-Topic 205

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-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

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