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Long-Term Incentive Plan and Other Compensatory Awards (Tables)
 3 Months Ended 12 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Aldagen Inc [Member]
Dec. 31, 2012
Long Term Incentive Plan [Member]
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

The following table summarizes the stock options granted by the Company during the three months ended March 31, 2013. These options were granted to employees and board members under the Company’s Long-Term Incentive Plan.

 

Three Months Ended  
March 31, 2013  
   
Options Granted     Exercise Price  
         
  303,000       $0.51 - $0.53

The following table summarizes information about stock options outstanding as of December 31, 2012:

 

         
  Options Outstanding   Options Exercisable
Range of Exercise Prices   Number of Outstanding Shares   Weighted Average Remaining Contract Life   Weighted Average Exercise Price   Number Exercisable   Weighted Average
Exercise
Price
$0.30 – $1.50     6,153,453       5.9     $ 0.99       5,022,290     $ 0.97  
$1.51 – $3.00     1,643,500       3.5     $ 2.20       1,570,000     $ 2.20  
$3.01 – $4.50     0       —       —       0       —  
$4.51 – $6.00     70,000       3.0     $ 5.20       70,000     $ 5.20

During the year ended December 31, 2010, the Company granted stock options which were valued using the assessed values of the Company’s common stock as follows:

 

Grant Date   Number of
Options Granted		     Exercise Price
per Share		     Black-Scholes
Fair Value
per Share		     Intrinsic Value
per Share		  
                         
3/23/2006     893,842     $ 0.20     $ 0.14     $ –  
7/26/2006     60,000       0.20       0.14       –  
2/27/2007     1,703,869       0.20       0.17       –  
4/6/2007     100,000       0.20       0.16       –  
5/14/2007     50,000       0.20       0.17       –  
11/16/2007     92,500       0.40       0.18       –  
12/17/2007     250,000       0.40       0.26       –  
1/1/2008     1,226,467       0.40       0.25       –  
2/12/2008     60,000       0.40       0.25       –  
4/10/2008     17,505       0.40       0.34       –  
4/15/2008     400,000       0.63       0.39       –  
6/2/2008     15,000       0.63       0.40       –  
8/11/2008     10,000       0.63       0.39       –  
8/20/2008     369,861       0.63       0.39       –  
9/17/2008     250,000       0.63       0.37       –  
1/9/2009     15,000       0.63       0.35       –  
7/27/2009     5,000       0.63       0.45       –  
10/27/2009     5,000       0.96       0.68       –  
2/9/2010     300,000       0.96       0.69       –  
4/15/2010     128,000       0.96       0.69       –  
10/8/2010     1,831,348       0.25       0.18       –

A summary of option activity under the LTIP as of December 31, 2012, and changes during the year then ended is presented below:

 

       
LTIP Options   Shares   Weighted-Average Exercise Price   Weighted-Average Remaining Contractual Term   Aggregate Intrinsic
Value
Outstanding at January 1, 2012     6,275,555     $ 1.23                    
Granted     2,271,500     $ 1.41                    
Exercised     (35,602 )    $ 0.43                    
Forfeited or expired     (644,500 )    $ 1.24              
Outstanding at December 31, 2012     7,866,953     $ 1.28       5.4     $ 463,577  
Exercisable at December 31, 2012     6,662,290     $ 1.30       4.8   $ 463,577
Schedule Of Share Based Compensation Stock Warrants Activity [Table Text Block]  

Additionally, the Company has issued certain compensatory warrants outside of the LTIP, in exchange for the performance of services. A summary of service provider warrant activity as of December 31, 2012, and changes during the year then ended is presented below:

 

       
Warrants to Service Providers   Shares   Weighted-Average Exercise Price   Weighted-Average Remaining Contractual Term   Aggregate Intrinsic
Value
Outstanding at January 1, 2012     1,335,149     $ 1.52                    
Granted     0       —                    
Exercised     0       —                    
Forfeited or expired     (160,149 )    $ 1.65              
Outstanding at December 31, 2012     1,175,000     $ 1.50       1.9     $ 0  
Exercisable at December 31, 2012     1,175,000     $ 1.50       1.9     $ 0
   
Schedule Of Warrants Outstanding [Table Text Block]  

The following table summarizes information about compensatory warrants outstanding as of December 31, 2012:

 

      Warrants Outstanding     Warrants Exercisable  
Range of Exercise Prices     Number of
Outstanding
Shares		     Weighted
Average
Remaining
Contract Life		     Weighted
Average
Exercise Price		     Number
Exercisable		     Weighted
Average
Exercise
Price		  
$ 1.25 – $1.50       850,000       1.9     $ 1.40       850,000     $ 1.40  
$ 1.75       325,000       2.1     $ 1.75       325,000     $ 1.75
   
Schedule Of Share Based Compensation Expense [Table Text Block]  

The Company has recorded stock-based compensation expense as follows:

 

   
  Year Ended December 31
Stock-Based Expense   2012   2011
Awards under the LTIP   $ 2,027,031     $ 305,180  
Awards outside the LTIP     20,700       —  
     $ 2,047,731     $ 305,180  
Included in Statements of Operations caption as follows:                  
Salaries and wages   $ 1,389,001     $ 155,097  
Consulting expense     275,924       64,006  
General and administrative     382,806       86,077  
     $ 2,047,731     $ 305,180