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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Summary of Significant Accounting Policies (Textual)    
Deferred revenue $ 25,341 $ 25,341
Concentration of credit risk, customers accounted 10% or more.  
Accounts Receivable [Member] | Customer A [Member]    
Summary of Significant Accounting Policies (Textual)    
Concentration risk percentage 51.00% 55.00%
Accounts Receivable [Member] | Customer B [Member]    
Summary of Significant Accounting Policies (Textual)    
Concentration risk percentage 20.00% 14.00%
Accounts Receivable [Member] | Customer C [Member]    
Summary of Significant Accounting Policies (Textual)    
Concentration risk percentage 17.00% 13.00%