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RESTRICTED CASH AND INVESTMENTS (Tables)
12 Months Ended
Dec. 31, 2020
Restricted Cash And Investments  
Restricted cash and investments
   At December 31  At December 31
(in thousands)  2020  2019
       
Cash and cash equivalents  $2,883   $2,859 
Investments   9,135    9,135 
   $12,018   $11,994 
           
Restricted cash and investments-by item:          
Elliot Lake reclamation trust fund  $2,883   $2,859 
Letters of credit facility pledged assets   9,000    9,000 
Letters of credit additional collateral   135    135 
   $12,018   $11,994