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Note 6 - Deferred Charges, Net (Tables)
12 Months Ended
Dec. 31, 2013
Deferred Charges [Abstract]  
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
   
2012
   
2013
 
Balance, beginning of year
    697,951       318,578  
Amortization of loan arrangement fees
    (135,981 )     (145,825 )
Deferred offering expenses
    -       165,678  
Deferred offering expenses reclassified to paid-in capital
    (243,392 )     -  
Balance, end of year
    318,578       338,431