Accounts Receivable and Unbilled Accounts Receivable (Details 2)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Department of Homeland Security ("DHS") [Member] | Trade Accounts Receivable [Member]
Concentration Risk [Line Items]
As a % of Revenues			33.00%		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	56.00%	36.00%	52.00%	37.00%