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RETIREMENT BENEFIT OBLIGATION (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Statement1 [Line Items]    
Recognised liability at beginning of the year $ 1,819 $ 1,922
Recognised in profit or loss in the current year 177 152
Interest on obligation 177 152
Other 1,613 1,819
Actuarial gains (85) (48)
Translation (147) (70)
Employer payments (151) (137)
Present value of unfunded obligation recognised as a liability at end of year 1,613 1,819
Current portion 124 0
Non-current $ 1,489 $ 1,819
The principal actuarial assumptions applied in the determination of fair values include:    
Health care cost inflation rate (p.a.) 7.80% 7.10%
Discount rate (p.a.) 10.40% 10.30%
CPI inflation 5.80% 5.10%
Continuation at retirement 75.00% 75.00%