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Economic Dependence (Narrative) (Details) - Revenue [Member] - Customer Concentration Risk [Member]
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2022
Jun. 30, 2021
Two Customers [Member]      
Concentration Risk, Percentage 78.00% 71.00%  
Three Customers [Member]      
Concentration Risk, Percentage     70.00%
Four Customers [Member]      
Concentration Risk, Percentage     83.00%