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Accrued liabilities and other payables (Tables)
 12 Months Ended
Dec. 31, 2021
Miscellaneous current liabilities [abstract]  
Accrued liabilities and other payables
       
  December 31,
  2021  2020
Accrued interest 179  —
Accrued Interest Swap Loss 30  —
Accrued audit fees 82  63
Other accruals 3,262  1,953
Insurance deductibles 64  96
Other payables 59  47
Total 3,676  2,159