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STOCKHOLDERS' EQUITY
 3 Months Ended
Mar. 31, 2012
Stockholders' Equity Attributable to Parent [Abstract]  
Stockholders' Equity Note Disclosure [Text Block]
STOCKHOLDERS’ EQUITY
Common Stock.
Our Board of Directors is authorized to issue up to 100,000,000 shares of common stock, from time to time, as provided in a resolution or resolutions adopted by the Board of Directors.
On February 7, 2012 we entered into definitive agreements with institutional and other accredited investors and raised approximately $22.0 million in a private placement financing ("Private Placement"), which includes an aggregate of $3.0 million in convertible notes issued in December 2011 to entities associated with Third Security, LLC, a related party, that automatically convert into shares of our common stock and warrants to purchase such common stock on the same terms as all investors in the Private Placement. Pursuant to the purchase agreement, we issued an aggregate of 19,000,000 shares of our common stock at a price per share of $1.00, as well as five-year warrants to purchase up to an aggregate of 9,500,000 shares of common stock with an exercise price of $1.25 per share. In connection with the conversion of the convertible notes issued by us to the entities associated with Third Security, LLC, the entities received an aggregate of 3,000,000 shares of common stock and 1,500,000 warrants on the same terms as all investors in the Private Placement. The costs incurred to complete the Private Placement were recorded as a reduction in equity in the amount of $1.5 million. Net proceeds from this offering will be used for general corporate and working capital purposes, primarily to accelerate development of several of our key initiatives.

Pursuant to the Company's equity financing completed on February 2, 2012, the Company is obligated to pay PGxHealth, LLC (“PGx”) an aggregate of $5.5 million as a prepayment under the senior secured promissory note (the “Note”). The Company has accounted for the full prepayment amount as a current liability as of March 31, 2012. The Company has contacted PGx on numerous occasions to make arrangements for having the Company make the prepayment to PGx in accordance with the terms of the Note, as well as to coordinate the timing of the prepayment. However, PGx has not responded to any of the Company's outreach efforts. The Company intends to continue to comply with the original terms of the Note.
Common Stock Warrants.
11,000,000 common stock warrants were issued during the three months ended March 31, 2012. No common stock warrants were issued or exercised during the three months ended March 31, 2011. Warrants to purchase an aggregate of 16,172,408 shares of common stock were outstanding at March 31, 2012.
 
Warrant Holder
 
Issue Year
 
Expiration
 
Underlying
Shares
 
Exercise
Price
Affiliates of Third Security, LLC(1)
 
2010
 
December 2015
 
5,172,408
 
$0.58
Various Institutional Holders(2)
 
2012
 
February 2017
 
9,500,000
 
$1.25
Affiliates of Third Security, LLC(2)
 
2012
 
February 2017
 
1,500,000
 
$1.25
 
 
 
 
 
 
16,172,408
 
 
(1)
This Warrant was issued in connection with the Financing. The number of underlying shares shown reflects the number of shares of common stock issuable upon conversion of the shares of Series A Preferred Stock for which this Warrant is currently exercisable.
(2)
These Warrants were issued in connection with the Private Placement in February 2012.