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Concentration Of Credit Risk And Economic Dependence (Major Customers) (Details) - USD ($)
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Concentration Risk [Line Items]      
Net Accounts Receivable $ 2,387,590   $ 4,367,721
Customer A [Member]      
Concentration Risk [Line Items]      
Net Accounts Receivable 1,895,862   2,259,769
Customer B [Member]      
Concentration Risk [Line Items]      
Net Accounts Receivable 839,808   2,268,426
Major Customers [Member]      
Concentration Risk [Line Items]      
Net Accounts Receivable $ 2,735,670   $ 4,528,195
Net Revenue [Member] | Customer A [Member]      
Concentration Risk [Line Items]      
Concentration risk percentage 61.10% 55.50%  
Net Revenue [Member] | Customer B [Member]      
Concentration Risk [Line Items]      
Concentration risk percentage 36.00% 43.70%  
Net Revenue [Member] | Major Customers [Member]      
Concentration Risk [Line Items]      
Concentration risk percentage 97.10% 99.20%