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Note 13 - Fair Value Measurement (Tables)
 3 Months Ended
Mar. 31, 2013
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
   
March 31, 2013
 
   
Fair Value Measurements Using
   
Assets at
 
   
Level 1
   
Level 2
   
Level 3
   
Fair Value
 
                                 
Derivative instrument asset
 
$
—
   
$
83,622
   
$
—
   
$
83,622
 
Total Assets
 
$
—
   
$
83,622
   
$
—
   
$
83,622
 
                                 
Derivative instrument liability
 
$
—
   
$
275,766
   
$
—
   
$
275,766
 
Total Liabilities
 
$
—
   
$
275,766
   
$
—
   
$
275,766
 
   
December 31, 2012
 
   
Fair Value Measurements Using
   
Assets at
 
   
Level 1
   
Level 2
   
Level 3
   
Fair Value
 
                                 
Derivative instrument asset
 
$
—
   
$
444,782
   
$
—
   
$
444,782
 
Total Assets
 
$
—
   
$
444,782
   
$
—
   
$
444,782