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Note 3 - Inventories (Tables)
12 Months Ended
Dec. 31, 2013
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
   
2012
   
2013
 
Lubricants
    1,433,129       1,293,780  
Victualling
    173,883       180,334  
Bunkers
    205,624       -  
Total
    1,812,636       1,474,114