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ACCOUNTS RECEIVABLE (Tables)
 12 Months Ended
Dec. 31, 2020
Trade and other receivables [abstract]  
Disclosure of detailed information about trade and other receivables [Table Text Block]
    2020     2019  
Accounts receivable before allowance for doubtful accounts $ 3,728   $ 22,052  
Allowance for doubtful accounts   (169 )   (188 )
Accounts receivable $ 3,559   $ 21,864