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Summary of Significant Accounting Policies (Details 2)
Mar. 31, 2019
Dec. 31, 2018
Company A [Member]    
Revenue, Major Customer [Line Items]    
Accounts receivable due from significant customers 42.00% 35.00%
Company B [Member]    
Revenue, Major Customer [Line Items]    
Accounts receivable due from significant customers 29.00% 36.00%
Company C [Member]    
Revenue, Major Customer [Line Items]    
Accounts receivable due from significant customers 13.00% 15.00%