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Trade and Other Receivables - Summary of Trade and Other Receivables (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Trade And Other Receivables [Abstract]    
Trade receivables, net $ 4,003 $ 4,839
Other receivables 129 141
Deposits 121 66
Prepayments 1,244 460
Trade and other current receivables 5,497 5,506
Trade receivables, gross 4,145 5,191
Credit loss allowance (142) (352)
Trade and other receivables $ 4,003 $ 4,839