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Accounts Receivable and Unbilled Accounts Receivable (Schedule of Major Customers, by Percentage of Accounts Receivable) (Details) (Trade accounts receivable [Member], Customer Concentration Risk [Member])	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Transportation Security Administration ("TSA") [Member]
Concentration Risk [Line Items]
As a % of Receivables	15.00%	19.00%
Department of Homeland Security ("DHS") [Member]
Concentration Risk [Line Items]
As a % of Receivables	12.00%	8.00%
US Airforce [Member]
Concentration Risk [Line Items]
As a % of Receivables	0.00%	14.00%
Accenture [Member]
Concentration Risk [Line Items]
As a % of Receivables	10.00%	0.00%

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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