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Note 9 - Warrants (Tables)
9 Months Ended
Sep. 30, 2013
Stockholders' Equity Note [Abstract]  
Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block]
   

September 30, 2013

   

September 30, 2012

 

Stock Price

  $ 2.57     $ 4.44  

Exercise Price

  $ 14.93     $ 14.93  

Expected Volatility

    77 %     112 %

Expected Dividend Yield

 

None

   

None

 

Expected Term (in years)

    2.8       4.0  

Risk-free Interest Rate

    0.66 %     0.37 %
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
   

2013

   

2012

 
   

Warrants

   

Weighted

Average

Exercise

Price

   

Warrants

   

Weighted

Average

Exercise

Price

 

Outstanding at January 1,

    412,776     $ 14.93       412,776     $ 14.93  

Issued

                               

Expired

                               

Warrant redemption Exercised

                               

Outstanding at September 30,

    412,776     $ 14.93       412,776     $ 14.93  

Currently exercisable

    412,776     $ 14.93       412,776     $ 14.93  
Schedule of Stockholders Equity [Table Text Block]
    Warrants Outstanding and Exercisable          

Range of
Exercise Prices

     

Warrants

   

Weighted

Average

Remaining Contractual

Life (Years)

   

Weighted

Average

Exercise

Price

 
  $13.80           112,776       2.6     $ 13.80  
$13.86 to $24.00         300,000       3.0       15.36  
              412,776       2.8     $ 14.93