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SUPPLEMENTARY CASH FLOW INFORMATION (Details) - USD ($)
 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Net change in non-cash working capital items:    
Inventory $ (405,000) $ 1,802,000
Prepaid expenses and other assets (199,000) 144,000
Taxes recoverable 1,676,000 (743,000)
Taxes payable (7,000) (46,000)
Accounts payable and accrued liabilities 194,000 (1,545,000)
Amounts receivable 2,000 317,000
Other liabilities 0 (178,000)
Amounts due to related parties 25,000 (25,000)
Net change in non-cash working capital $ 1,284,000 $ (274,000)