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Discontinued Operations The summary of assets and liabilities related to Regenerative Medicine - China business (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Assets:    
Cash and cash equivalents $ 0 $ 8,810,272
Assets of Disposal Group, Including Discontinued Operation 23,800,300.0  
Regenerative Medicine - China segment [Member]
    
Assets:    
Cash and cash equivalents   103,300
Prepaid expenses and other current assets   284,400
Property, plant and equipment, net   1,256,800
Other assets   149,000
Assets of Disposal Group, Including Discontinued Operation   1,793,500
Liabilities:    
Accounts Payable   177,800
Accrued liabilities   31,000
Liabilities of Disposal Group, Including Discontinued Operation   $ 208,800