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Long-Term Debt and Other Financial Liabilities (Tables)
6 Months Ended
Jun. 30, 2021
Long-Term Debt and Other Financial Liabilities [Abstract]  
Long-Term Debt and Other Financial Liabilities
The amounts in the accompanying consolidated balance sheets are analyzed as follows:

   
June 30,
2021
   
December 31,
2020
 
Long-term debt and other financial liabilities
   
207,917
     
173,289
 
Less: Deferred finance costs and debt discounts
   
(4,088
)
   
(3,527
)
Total
   
203,829
     
169,762
 
Less - current portion
   
(30,616
)
   
(19,417
)
Long-term portion
   
173,213
     
150,345
 
Long-Term Debt and Other Financial Liabilities [Member]  
Long-Term Debt and Other Financial Liabilities [Abstract]  
Annual Principal Payments
The annual principal payments required to be made after June 30, 2021 for all long-term debt and other financial liabilities, are as follows:

Twelve month periods ending June 30,
 
Amount
 
2022
   
32,102
 
2023
   
63,205
 
2024
   
30,206
 
2025
   
27,354
 
Thereafter
   
55,050
 
Total
   
207,917