AMORTIZATION OF INTANGIBLE ASSETS Values Assigned to Intangible Assets (Other Than Goodwill) for Acquisitions (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	$ 83,060
Amortized Intangible Assets, Accumulated Amortization	(42,071)
Amortized Intangible Assets, Net Book Value	40,989	53,799
S & H | Contracts - Fixed Price Level of Effort
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	1,606
Amortized Intangible Assets, Accumulated Amortization	(1,304)
Amortized Intangible Assets, Net Book Value	302
ICCI | Contracts - Fixed Price Level of Effort
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	1,181
Amortized Intangible Assets, Accumulated Amortization	(1,129)
Amortized Intangible Assets, Net Book Value	52
ICCI | Contracts - T&M and IDIQ
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	3,018
Amortized Intangible Assets, Accumulated Amortization	(3,006)
Amortized Intangible Assets, Net Book Value	12
ESD | Contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	1,207
Amortized Intangible Assets, Accumulated Amortization	(952)
Amortized Intangible Assets, Net Book Value	255
Sycamore. US. Inc | Contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	5,898
Amortized Intangible Assets, Accumulated Amortization	(5,079)
Amortized Intangible Assets, Net Book Value	819
Everest Technology Solutions, Inc | Contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	4,690
Amortized Intangible Assets, Accumulated Amortization	(2,423)
Amortized Intangible Assets, Net Book Value	2,267
JKA Technologies, Inc | Contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	2,680
Amortized Intangible Assets, Accumulated Amortization	(2,010)
Amortized Intangible Assets, Net Book Value	670
Forbes Analytic Software, Inc | Contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	2,775
Amortized Intangible Assets, Accumulated Amortization	(1,503)
Amortized Intangible Assets, Net Book Value	1,272
Flight Landata, Inc. | Contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	2,234
Amortized Intangible Assets, Accumulated Amortization	(2,141)
Amortized Intangible Assets, Net Book Value	93
Flight Landata, Inc. | Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	17,549
Amortized Intangible Assets, Accumulated Amortization	(13,919)
Amortized Intangible Assets, Net Book Value	3,630
Flight Landata, Inc. | Technology Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	1,958
Amortized Intangible Assets, Accumulated Amortization	(1,553)
Amortized Intangible Assets, Net Book Value	405
Poole and Associates, Inc. | Contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	20,914
Amortized Intangible Assets, Accumulated Amortization	(3,138)
Amortized Intangible Assets, Net Book Value	17,776
Poole and Associates, Inc. | Trade Names
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	795
Amortized Intangible Assets, Accumulated Amortization	(477)
Amortized Intangible Assets, Net Book Value	318
Sensage, Inc | Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	3,682
Amortized Intangible Assets, Accumulated Amortization	(552)
Amortized Intangible Assets, Net Book Value	3,130
Sensage, Inc | Marketing [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	249
Amortized Intangible Assets, Accumulated Amortization	(149)
Amortized Intangible Assets, Net Book Value	100
Sensage, Inc | Intellectual Property [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	4,567
Amortized Intangible Assets, Accumulated Amortization	(1,142)
Amortized Intangible Assets, Net Book Value	3,425
Rsignia, Inc [Member] | Intellectual Property [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	5,001
Amortized Intangible Assets, Accumulated Amortization	(972)
Amortized Intangible Assets, Net Book Value	4,029
Dilijent Solutions LLC [Member] | Intellectual Property [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	1,000
Amortized Intangible Assets, Accumulated Amortization	(194)
Amortized Intangible Assets, Net Book Value	806
IDEAL Technology Corporation | Intellectual Property [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	2,056
Amortized Intangible Assets, Accumulated Amortization	(428)
Amortized Intangible Assets, Net Book Value	$ 1,628