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SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION (Accounts Payable and Accruals - Other) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Accounts payable and accruals - other:    
Payroll and related expenses $ 1,562 $ 1,460
Interest payable 767 555
Provision for vacation 1,506 1,526
Accrued expenses 11,981 9,586
Royalties payable 522 482
Property and equipment suppliers 95 317
Accounts payable and accruals - other $ 16,433 $ 13,926