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Note 3 - Derivative Instruments and Fair Value (Tables)
3 Months Ended
Mar. 31, 2016
Notes Tables  
Fair Value, by Balance Sheet Grouping [Table Text Block]
   
March 31, 2016
 
   
Carrying Amount
   
Fair Value
 
Debt
               
Short-term borrowings and long-term debt
  $ 31,228,152     $ 31,228,152  
   
December 31, 2015
 
   
Carrying Amount
   
Fair Value
 
Debt
               
Short-term borrowings and long-term debt
  $ 25,195,452     $ 25,195,452  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
           
Fair Value Measurements December 31, 2015
 
Description
 
Total
   
Quoted Prices
in Active
Markets for
Identical assets
(Level 1)
   
Significant
Other
Observable
Inputs (Level 2)
   
Significant
Unobservable 
Inputs (Level 3)
 
Interest Rate Swap, net
  $ 4,453       --     $ 4,453       --  
Total
  $ 4,453       --     $ 4,453       --