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 6 Months Ended 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Top Five Customers [Member] | Revenue [Member]          
Concentration as a percentage 68.00% 65.00% 40.00% 49.00%  
Top Five Customers [Member] | Accounts Receivable [Member]          
Concentration as a percentage     73.00%   93.00%
Federal Agencies [Member] | Revenue [Member]          
Concentration as a percentage 8.00% 27.00% 10.00% 22.00%  
Federal Agencies [Member] | Accounts Receivable [Member]          
Concentration as a percentage     0.00%   1.00%