Business and Presentation (Details Textual) (USD $)
1 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended
Jan. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Jun. 25, 2014
Mar. 31, 2014
Dec. 31, 2012
Concentration Risk, Percentage   5.00%        
Allowance for Doubtful Accounts Receivable   $ 32,469 $ 16,497     $ 42,709
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   200,989,054 61,134,957      
Repayments of Notes Payable   6,201,143 1,020,000      
Debt Conversion, Converted Instrument, Amount   3,067,423 523,927      
Cash   15,946,425 3,286,713     2,615,805
Deferred Licensing Revenue   1,442,000        
Licenses Revenue   402,264 167,657      
Medical Device Excise Tax Percentage 2.30%          
Minimum Cash Balance   5,000,000        
Restructuring Reserve   413,000        
Product Warranty Accrual, Warranties Issued   600,000        
Inventory Valuation Reserves   90,000 0      
Minimum [Member]            
Property, Plant and Equipment, Useful Life   3 years        
Maximum [Member]            
Property, Plant and Equipment, Useful Life   5 years        
Furniture Lab And Manufacturing Equipment [Member] | Minimum [Member]            
Property, Plant and Equipment, Useful Life   7 years        
Furniture Lab And Manufacturing Equipment [Member] | Maximum [Member]            
Property, Plant and Equipment, Useful Life   10 years        
Centrifuges [Member] | Minimum [Member]            
Property, Plant and Equipment, Useful Life   3 years        
Centrifuges [Member] | Maximum [Member]            
Property, Plant and Equipment, Useful Life   6 years        
Safe Harbor Plan [Member]            
Defined Contribution Plan, Employer Discretionary Contribution Amount   175,000 164,000      
Convertible Debt Facility [Member]            
Convertible Debt         35,000,000  
Proceeds from Convertible Debt       26,000,000 9,000,000  
Proceeds From Issuance Of Common Stock And Warrants         2,000,000  
Repayments of Notes Payable         5,900,000  
Repayments of Convertible Debt         300,000  
Debt Conversion, Converted Instrument, Amount         3,100,000  
Federal Deposit Insurance Corporation [Member]            
Cash, Uninsured Amount   15,486,000 2,667,000      
Arthrex [Member] | Accounts Receivable [Member]            
Concentration Risk, Percentage   64.00%        
Arthrex [Member] | Sales Revenue, Net [Member]            
Concentration Risk, Percentage   91.00% 47.00%      
Aldagen Inc [Member]            
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net   422,000        
Angel [Member]            
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net   $ 707,000        
Angel [Member] | Arthrex [Member]            
Concentration Risk, Percentage   100.00%        
Non United States [Member]            
Percentage Of Product Sales   27.00% 9.00%