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INTEREST INCOME (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of interest income [Abstract]      
Interests on loans to joint ventures (Note 5) $ 0 $ 112 $ 983
Bank interests 201 355 899
Interest income $ 201 $ 467 $ 1,882