v3.21.2
Other receivables and prepayments (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Dec. 31, 2020
Apr. 30, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Advance to other party     $ 5,835   $ 5,835  
Utility Deposits $ 16   17 $ 16 17  
Other receivables 107   4 107 4  
Other prepayments 109   48 109 48  
Other receivables and prepayments $ 232   5,904 232 5,904  
Advance to a related party       $ 0 5,835 $ 0
Repayments of related party debt         $ 4 $ 0
Luk Lai Ching Kimmy            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Advance to a related party     $ 5,835      
Shareholding percentage held 4.20%   5.30% 4.20% 5.27%  
Repayments of related party debt   $ 5,835