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Unbilled Accounts Receivable (Details) - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unbilled accounts receivable $ 6,132,753 $ 8,112,690
Commercial [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unbilled accounts receivable 285,912 278,862
Government [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unbilled accounts receivable $ 5,846,841 $ 7,833,828