Annual report pursuant to section 13 and 15(d)

9. COMMON STOCK AND WARRANTS (Tables)

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9. COMMON STOCK AND WARRANTS (Tables)
 12 Months Ended
Dec. 31, 2012
Common Stock And Warrants  
Warrant activity

The following table summarizes warrant activity for the years ended December 31, 2012 and 2011 (number of shares in thousands):

 

    Number of
Shares 		    Price per
Share 		  Weighted
Average
Exercise Price 		 
Balance at December 31, 2010     3,872     $0.12 – $49.70   $ 12.20  
Warrants issued     4,956     $1.50   $ 1.50  
Warrants exercised     (2,437 )   $0.45   $ 0.45  
Balance at December 31, 2011     6,391     $0.12 – $49.70   $ 7.84  
Warrants issued     69,500     $0.43 –  $0.59   $ 0.52  
Warrants exercised     (302 )   $0.12 –  $0.53   $ 0.19  
Balance at December 31, 2012     75,589     $0.12 – $49.70   $ 1.14