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Note 16 - Voyage Expenses and Vessel Operating Expenses
 12 Months Ended
Dec. 31, 2015
Voyage Expenses And Vessel Operating Expenses [Abstract]  
Voyage Expenses And Vessel Operating Expenses [Text Block]
16. Voyage Expenses and Vessel Operating Expenses

The amounts in the accompanying consolidated statements of income are analyzed as follows:


    Year ended December 31,
Voyage Expenses   2013   2014   2015
Port expenses     2,067,494       2,278,961       3,960,574  
Bunkers     8,347,130       7,553,318       8,566,490  
Commissions     3,244,939       3,725,645       4,112,177  
Other voyage expenses     643,067       529,587       936,297  
                         
Total     14,302,630       14,087,511       17,575,538  

    Year ended December 31,
Vessels’ Operating Expenses   2013   2014   2015
Crew wages and related costs     22,138,595       26,378,730       31,391,419  
Insurance     1,667,915       2,028,142       2,415,028  
Repairs and maintenance     4,243,133       5,194,476       5,091,916  
Spares and consumable stores     5,757,455       7,120,974       7,978,592  
Miscellaneous expenses     2,716,455       4,713,014       3,777,670  
                         
Total     36,523,553       45,435,336       50,654,625