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ACCOUNTS RECEIVABLE (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Accounts receivable    
Trade receivables $ 2,454 $ 3,253
Other 820 1,469
Total 3,274 4,722
Less: allowance for credit losses (12) (16)
Net accounts receivable $ 3,262 $ 4,706