Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

Changes in the carrying amount of goodwill by reportable business segment for the nine months ended September 30, 2013 were as follows (in thousands):

			Professional				Performance
	Learning		& Technical				Readiness		Energy
	Solutions		Services		Sandy		Solutions		Services		Total
Balance as of     December 31, 2012	$	46,161	$	37,690	$	653	$	9,795	$	8,522	$	102,821
Acquisitions		13,558		—		—		—		—		13,558
Purchase accounting     adjustments		(195)		—		—		—		117		(78)
Foreign currency     translation		391		—		—		—		15		406
Balance as of     September 30, 2013	$	59,915	$	37,690	$	653	$	9,795	$	8,654	$	116,707

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The primary assets included in this category and their respective balances were as follows (in thousands):

	Gross Carrying		Accumulated		Net Carrying
	Amount		Amortization		Amount
September 30, 2013
Customer relationships	$	26,825	$	(12,254)	$	14,571
Tradenames		982		(887)		95
Intellectual property and other		3,709		(1,888)		1,821
	$	31,516	$	(15,029)	$	16,487
December 31, 2012
Customer relationships	$	22,193	$	(9,064)	$	13,129
Tradenames		982		(700)		282
Intellectual property and other		3,686		(1,225)		2,461
	$	26,861	$	(10,989)	$	15,872