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Note 8. Shareholders’ Equity (Tables)
6 Months Ended
Jun. 30, 2011
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Warrants Outstanding
 
Warrants
   
Exercise Price
 
Expiration Date
Series 1 warrants
    5,231,708     $ 2.45  
June 2014
Series 1 warrants
    460,976       2.56  
June 2014
Series 3 warrants
    17,021,817       2.50  
August 2014
Total warrants outstanding
    22,714,501