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Vessel Operating Expenses (Tables)
 12 Months Ended
Dec. 31, 2020
Text Block [Abstract]  
Vessel Operating Expenses The amounts in the accompanying consolidated statements of operations are analyzed as follows:
    
Year ended December 31,
  
Vessels’ Operating Expenses
   
2018
     
2019
     
2020
  
Crew wages and related costs
      36,628,082        30,874,618        32,073,496  
Insurance
      2,068,485        2,162,523        1,889,041  
Repairs and maintenance
      7,359,816        5,677,033        6,590,006  
Spares and consumable stores
      8,907,211        7,783,902        7,990,022  
Miscellaneous expenses
      5,471,184        3,088,018        4,752,656  
    
 
 
     
 
 
     
 
 
  
Total
   
 
60,434,778
 
   
 
49,586,094
 
   
 
53,295,221