Business Segments (Tables)

12 Months Ended

Dec. 31, 2012

Reconciliation of Revenue from Segments to Consolidated [Table Text Block]

The following table sets forth the revenue and operating results attributable to each reportable segment and includes a reconciliation of segment revenue to consolidated revenue and operating results to consolidated income before income tax expense (in thousands):

	Years ended December 31,
	2012			2011			2010
Revenue:
Learning Solutions	$	161,455		$	130,392		$	118,922
Professional & Technical Services		87,844			85,285			70,893
Sandy Training & Marketing		70,243			54,604			47,153
Performance Readiness Solutions		55,794			40,079			—
Energy Services		26,236			22,807			22,958
	$	401,572		$	333,167		$	259,926
Operating income:
Learning Solutions	$	16,487		$	9,700		$	9,074
Professional & Technical Services		5,717			7,526			3,310
Sandy Training & Marketing		4,897			3,018			1,518
Performance Readiness Solutions		2,548			601			—
Energy Services		6,822			5,540			5,322
Gain on reversal of deferred rent liability		—			1,041			—
Gain (loss) on change in fair value of contingent consideration, net		(789	)		517			1,313
Operating income		35,682			27,943			20,537
Interest expense		(269	)		(209	)		(236	)
Other income		389			657			551
Income before income tax expense	$	35,802		$	28,391		$	20,852

Additional Information Relating To Business Segments [Table Text Block]

Additional information relating to our business segments is as follows (in thousands):

	December 31,
	2012		2011
Identifiable assets:
Learning Solutions	$	116,753	$	95,389
Professional & Technical Services		56,160		59,675
Sandy Training & Marketing		24,250		16,819
Performance Readiness Solutions		27,472		25,747
Energy Services		19,799		13,946
Total assets	$	244,434	$	211,576

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

Corporate and other assets which consist primarily of cash and cash equivalents, other assets, and deferred tax assets and liabilities are allocated to the segments based on their respective percentage of consolidated revenues.

	Years ended December 31,
	2012		2011		2010
Additions to property, plant and equipment:
Learning Solutions	$	1,004	$	1,116	$	380
Professional & Technical Services		299		1,068		336
Sandy Training & Marketing		38		6		9
Performance Readiness Solutions		61		161		—
Energy Services		203		48		31
Corporate and other		931		1,576		775
	$	2,536	$	3,975	$	1,531
Depreciation and amortization:
Learning Solutions	$	3,794	$	2,695	$	1,824
Professional & Technical Services		439		294		327
Sandy Training & Marketing		428		424		478
Performance Readiness Solutions		1,102		871		—
Energy Services		357		353		386
Corporate and other		1,851		1,550		1,215
	$	7,971	$	6,187	$	4,230

Assets [Member]

Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]

Information about our total assets in different geographic regions is as follows (in thousands):

	December 31,
	2012		2011
United States	$	188,596	$	165,482
United Kingdom		40,163		39,033
Other		15,675		7,061
	$	244,434	$	211,576

Revenue [Member]

Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]

Information about our revenue in different geographic regions, which are attributable to our wholly owned subsidiaries located in the United Kingdom, Canada, Netherlands, Denmark, Germany, France, Mexico, Colombia, Singapore, China and India is as follows (in thousands):

	Years ended December 31,
	2012		2011		2010
United States	$	323,867	$	274,010	$	214,194
United Kingdom		61,102		48,151		36,518
Other		16,603		11,006		9,214
	$	401,572	$	333,167	$	259,926