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CASH AND CASH EQUIVALENTS (Tables)
 12 Months Ended
Dec. 31, 2020
Cash and cash equivalents [abstract]  
Cash and cash equivalent balance
   At December 31  At December 31
(in thousands)  2020  2019
       
Cash  $12,004   $1,583 
Cash in MLJV and MWJV   540    1,397 
Cash equivalents   12,448    5,210 
   $24,992   $8,190