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Accounts Receivable and Significant Concentrations (Details 1) - Accounts Receivable
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
U.S. Immigration and Customs Enforcement    
Concentration risk 11.00% 9.00%
National Aeronautics and Space Administration    
Concentration risk 10.00% 21.00%
U.S. Census Bureau    
Concentration risk 37.00% 18.00%