Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Summary of Significant Accounting Policies - Schedule of Customer Concentration Risk Percentage (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Top Five Customers [Member] | Revenue [Member]          
Concentration credit risk percentage 47.00% 54.00% 55.00% 38.00%  
Top Five Customers [Member] | Accounts Receivable [Member]          
Concentration credit risk percentage     60.00%   54.00%
Federal Agencies [Member] | Revenue [Member]          
Concentration credit risk percentage 9.00% 12.00% 14.00% 8.00%  
Federal Agencies [Member] | Accounts Receivable [Member]          
Concentration credit risk percentage     5.00%   5.00%