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Accrued liabilities and other payables (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Miscellaneous current liabilities [abstract]    
Accrued interest $ 179 $ 0
Accrued Interest Swap Loss 30 0
Accrued audit fees 82 63
Other accruals 3,262 1,953
Insurance deductibles 64 96
Other payables 59 47
Total $ 3,676 $ 2,159