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Note 4 - Inventories
9 Months Ended
Sep. 30, 2013
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
4.  
Inventories

The amounts shown in the accompanying unaudited condensed consolidated balance sheets are analyzed as follows:

   
December 31, 2012
   
September 30, 2013
 
Bunkers
    1,854,589       1,862,235  
Lubricants
    1,297,818       1,479,596  
Total
    3,152,407       3,341,831