Capital Stock (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Inducement to remaining shareholders of Series D Convertible Preferred stock to convert all outstanding shares	330,000
Exercise of options issued under the Long-Term Incentive Plan	35,602
Common stock issued in lieu of cash for dividend payable on Series D Convertible Preferred shares	76,461	714,126
Sale of shares pursuant to private offering	4,231,192	984,850
Sale of shares pursuant to October 2010 equity purchase agreement	4,350,000	7,913,804
Common stock issued in lieu of cash for fees incurred pursuant to October 2010 equity purchase agreement	179,701	211,055
Common stock issued ln lieu of cash for consultant	17,500
Totals	38,272,094	11,432,549
Common stock issued upon conversion of Series D stock	$ 1,051,371
Stock Issued During Period, Value, Stock Options Exercised	15,185
Proceeds from Issuance of Private Placement	471,250
Proceeds From Issuance Of Shares On Equity Purchase Agreement	4,493,902	3,449,330
Proceeds From Issuance Of Shares In Lieu Of Equity Purchase Agreement	0	0
Proceeds from Issuance or Sale of Equity	13,560,862	3,965,356
Acquisition Of Aldagen [Member]
Proceeds from Issuance of Private Placement	5,000,000
Consultant [Member]
Proceeds From Issue Of Common Stock	0
Convertible Notes Payable [Member]
Partial conversion of 4% Convertible Notes	1,062,500	1,200,000
Proceeds from Issuance of Private Placement		0
August Two Thousand and Eight Warrant [Member]
Class Of Warrant Or Right Excercised During Period	584,672
Proceeds from Warrant Exercises	584,672
August Two Thousand and Nine Warrant [Member]
Class Of Warrant Or Right Excercised During Period	418,968	374,561
Proceeds from Warrant Exercises	213,674	191,026
April Two Thousand and Ten Warrant [Member]
Class Of Warrant Or Right Excercised During Period	2,833,493
Proceeds from Warrant Exercises	1,521,028
Guarantor Two Thousand and Ten Warrant [Member]
Class Of Warrant Or Right Excercised During Period	1,333,334
Proceeds from Warrant Exercises	715,734
October Two Thousand and Ten Warrant [Member]
Class Of Warrant Or Right Excercised During Period	375,000
Proceeds from Warrant Exercises	225,000
Guarantor Two Thousand and Eleven Warrant [Member]
Class Of Warrant Or Right Excercised During Period	1,583,335
Proceeds from Warrant Exercises	791,667
Series D Preferred Stock [Member]
Conversion of Series D Convertible Preferred shares	7,460,350	34,153
Inducement to remaining shareholders of Series D Convertible Preferred stock to convert all outstanding shares	330,000
Common stock issued upon conversion of Series D stock		0
Stock Issued During Period, Value, Stock Options Exercised	0
Proceeds From Issuance Of Shares In Lieu Of Equity Purchase Agreement	0	0
Series E Preferred Stock [Member]
Conversion of Series D Convertible Preferred shares	13,399,986
Stock Issued During Period, Value, Stock Options Exercised	0
Proceeds from Issuance of Private Placement	$ 0