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Note 6 - Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2012
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
   
June 30, 2012
   
  December 31, 2011
 
Description
 
Level (1)
   
Level (2)
   
Level (3)
   
Total
   
Level (1)
   
Level (2)
   
Level (3)
   
Total
 
Assets:
                                               
Cash equivalents
  $ 3,878,216     $ ---     $ ---     $ 3,878,216     $ 5,394,434     $ ---     $ ---     $ 5,394,434  
                                                                 
Total Liabilities
  $ ---     $ ---     $ ---     $ ---     $ ---     $ ---     $ ---     $ ---