Revenue (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following series of tables presents our revenue disaggregated by various categories (dollars in thousands).

	Years Ended December 31,
	Workforce Excellence							Business Transformation Services							Consolidated
	2019			2018		2017		2019			2018		2017		2019			2018		2017
Revenue by type of service:
Managed learning services	$	218,730		206,388		207,007		$	—		—		—		$	218,730		206,388		207,007
Engineering & technical services	111,065			110,426		101,252		—			—		—		111,065			110,426		101,252
Sales enablement	—			—		—		161,295			103,740		101,196		161,295			103,740		101,196
Organizational development	—			—		—		92,200			94,606		99,753		92,200			94,606		99,753
	$	329,795		316,814		308,259		$	253,495		198,346		200,949		$	583,290		515,160		509,208
Revenue by geographic region:
Americas	$	230,236		213,938		198,653		$	193,129		165,807		175,027		$	423,365		379,745		373,680
Europe Middle East Africa	91,947			91,764		100,296		50,160			38,171		30,461		142,107			129,935		130,757
Asia Pacific	34,300			30,688		29,828		25,354			2,634		376		59,654			33,322		30,204
Eliminations	(26,688		)	(19,576	)	(20,518	)	(15,148		)	(8,266	)	(4,915	)	(41,836		)	(27,842	)	(25,433	)
	$	329,795		316,814		308,259		$	253,495		198,346		200,949		$	583,290		515,160		509,208
Revenue by client market sector:
Automotive	$	10,024		10,646		10,102		$	155,105		105,431		101,285		$	165,129		116,077		111,387
Financial & Insurance	82,434			87,813		86,718		10,715			12,303		16,339		93,149			100,116		103,057
Manufacturing	34,154			33,055		35,795		21,894			16,156		17,134		56,048			49,211		52,929
Energy / Oil & Gas	35,604			37,088		34,195		5,693			4,752		2,429		41,297			41,840		36,624
U.S. Government	39,432			29,584		25,254		7,964			8,782		9,475		47,396			38,366		34,729
U.K. Government	18,153			18,733		27,734		—			—		—		18,153			18,733		27,734
Information & Communication	14,294			14,083		18,123		7,913			9,510		10,490		22,207			23,593		28,613
Aerospace	27,511			25,989		22,142		7,754			3,683		6,549		35,265			29,672		28,691
Electronics Semiconductor	13,906			15,070		16,449		1,495			857		1,069		15,401			15,927		17,518
Life Sciences	19,560			15,009		8,420		6,370			8,750		9,377		25,930			23,759		17,797
Other	34,723			29,744		23,327		28,592			28,122		26,802		63,315			57,866		50,129
	$	329,795		316,814		308,259		$	253,495		198,346		200,949		$	583,290		515,160		509,208