Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Dec. 31, 2011

Aldagen Inc [Member]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The weighted-average assumptions used in the model are summarized in the following table:

	2012			2011			2010
Risk free rate		0.63	%		1.03	%		1.96	%
Expected years until exercise		5.2			5.0			6.0
Expected stock volatility		129	%		141	%		143	%
Dividend yield		—			—			—

Schedule Of Common Shares Potenially Issuable [Table Text Block]

The common shares potentially issuable upon the exercise of these instruments were as follows at December 31:

	2012		2011		2010
Options		7,866,953		6,275,555		5,323,054
Warrants		9,242,701		13,650,844		11,668,364
Contingent consideration		20,309,723		—		—
Convertible notes		2,078,393		—		—
Series A Preferred Stock		—		32,554		32,554
Series B Preferred Stock		—		21,928		21,928
Series C Preferred Stock		—		—		—
Series D Preferred Stock		—		7,460,339		7,494,492
		39,497,770		27,441,220		24,540,392

Disclosure Of Share Based Compensation Arrangements By Share Based Payment Award To Non Employee [Table Text Block]

No stock options were granted to nonemployees during the year ended December 31, 2011.

	Year Ended December 31
	2010
Dividend yield		0.00	%
Volatility		82.90	%
Risk-free interest rate		2.70	%
Expected life (in years)		6.08

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

For the year ended December 31, 2011, there were no stock options granted.

	Year Ended December 31
	2010
Dividend yield		0.00	%
Volatility		85.20	%
Risk-free interest rate		1.53	%
Expected life (in years)		6.08

Schedule Of Noncash Share Based Compensation Expenses [Table Text Block]

The Company recognized noncash share-based compensation expense to employees in its research and development and selling, general, and administrative functions as follows:

					Period From
					March 3,
					2000
					(Inception)
					Through
	Year Ended December 31				December 31,
	2011		2010		2011
Research and development	$	30,013	$	64,163	$	382,636
Selling, general, and administrative		129,752		234,690		1,081,521
Total share-based compensation	$	159,765	$	298,853	$	1,464,157