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Economic Dependence (Narrative) (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Four Customers [Member] | Revenue [Member] | Customer Concentration Risk [Member]        
Concentration risk, percentage 95.00% 93.00% 93.00% 85.00%