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Summary of Significant Accounting Policies Summary of Significant Accounting Policies:Concentration of Credit Risk (Details) - Accounts Receivable [Member] - Credit Concentration Risk [Member]
6 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Customer Two [Member]    
Concentration Risk [Line Items]    
Concentration Risk, Percentage 14.00% 15.00%
Customer One [Member]    
Concentration Risk [Line Items]    
Concentration Risk, Percentage 13.00% 12.00%