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Accounts Receivable and Unbilled Accounts Receivable (Details 2)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Department of Homeland Security ("DHS") [Member] | Trade Accounts Receivable [Member]          
Concentration Risk [Line Items]          
As a % of Revenues     50.00%   20.00%
Science Applications International Corporation [Member] | Trade Accounts Receivable [Member]          
Concentration Risk [Line Items]          
As a % of Revenues     0.00%   21.00%
Revenues [Member] | Department of Homeland Security ("DHS") [Member]          
Concentration Risk [Line Items]          
As a % of Revenues 54.00% 36.00% 52.00% 39.00%