Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Summary of Customer Concentration Risk Percentage (Details)

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Summary of Significant Accounting Policies - Summary of Customer Concentration Risk Percentage (Details)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Top Five Customers [Member] | Revenue [Member]          
Concentration as a percentage 73.00% 60.00% 38.00% 31.00%  
Top Five Customers [Member] | Accounts Receivable [Member]          
Concentration as a percentage     74.00%   82.00%
Federal Agencies [Member] | Revenue [Member]          
Concentration as a percentage 30.00% 9.00% 19.00% 3.00%  
Federal Agencies [Member] | Accounts Receivable [Member]          
Concentration as a percentage     28.00%   1.00%