Accounts Receivable and Unbilled Accounts Receivable (Details 2)	3 Months Ended	12 Months Ended	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Department of Homeland Security ("DHS") [Member] | Trade Accounts Receivable [Member]
Concentration Risk [Line Items]
As a % of Revenues	23.00%	20.00%
Science Applications International Corporation [Member] | Trade Accounts Receivable [Member]
Concentration Risk [Line Items]
As a % of Revenues	0.00%	21.00%
US Airforce [Member] | Trade Accounts Receivable [Member]
Concentration Risk [Line Items]
As a % of Revenues	14.00%	0.00%
AbbVie, Inc [Member] | Trade Accounts Receivable [Member]
Concentration Risk [Line Items]
As a % of Revenues	10.00%	7.00%
Revenues [Member] | Department of Homeland Security ("DHS") [Member]
Concentration Risk [Line Items]
As a % of Revenues	49.00%		37.00%