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Interest Expense and Finance Costs (Tables)
 12 Months Ended
Dec. 31, 2021
Interest costs [abstract]  
Interest Expense and Finance Costs
           
  For the year ended December 31,
  2021  2020  2019
Interest payable on long-term borrowings 1,958  3,721  3,603
Bank charges 59  69  28
Amortization of debt discount 547  293  383
Operating lease liability interest 52  44  51
Other finance expenses 646  28  638
Total 3,262  4,155  4,703