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Income Taxes (Details 3) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
U.S. Federal statutory income tax 35.00% 35.00% 35.00%
State and local income tax benefits 4.20% 3.40% 3.20%
Fair value of Derivatives (6.80%) 4.70% (3.00%)
Nondeductible guarantee fees (3.70%) (2.00%) (1.40%)
Other (2.10%) (1.50%) 0.20%
Valuation allowance for deferred income tax assets (26.60%) (39.10%) (33.80%)
Effective income tax rate 0.10% 0.50% 0.20%
Aldagen Inc [Member]
     
U.S. Federal statutory income tax   (34.00%) (34.00%)
State and local income tax benefits   (4.50%) (4.60%)
Federal income tax credits   (3.00%) (4.50%)
Amortization of debt discount   9.00% 10.10%
Nondeductible guarantee fees   (8.70%) (4.90%)
Other   0.20% 1.90%
Valuation allowance for deferred income tax assets   41.00% 36.00%
Effective income tax rate   0.00% 0.00%
United States Federal tax at statutory rate   (2,310,400) (3,269,800)
State taxes (net of Federal benefit)   (309,100) (437,600)
Change in valuation reserves   2,746,800 3,464,100
Federal income tax credits   (149,800) (433,600)
Amortization of debt discount   468,200 969,400
Other nondeductible expenses   (454,600) (471,700)
Other   8,900 179,200
Provision for income taxes   0 0