Discontinued Operations Company recognized loss on exit (Details) (Regenerative Medicine - China segment [Member], USD $)	1 Months Ended
	Mar. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on exit of segment	$ 1,138,000
Gain (Loss) on Dispostion of Cash and Cash Equivalents [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on exit of segment	195,100
Gain (Loss) on Disposition of Prepaid Expenses and Other Current Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on exit of segment	14,900
Gain (Loss) on Disposition of Property, Plant and Equipment, Net [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on exit of segment	1,023,700
Gain (Loss) on Disposition of Other Assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on exit of segment	330,500
Gain (Loss) on Disposition of Accounts Payable [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on exit of segment	(177,100)
Gain (Loss) on Disposition of Accrued Liabilities [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on exit of segment	(79,200)
Gain (Loss) on Disposition of Accumulated Comprehensive Income [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on exit of segment	$ (169,900)