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Accounts Receivable and Significant Concentrations (Details 2) - Sales Revenue, Net
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
U.S. Immigration and Customs Enforcement    
As a % of revenues 14.00% 16.00%
U.S. Customs Boarder Patrol    
As a % of revenues 12.00% 11.00%
United States Census Bureau    
As a % of revenues 10.00% 0.00%