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Operating Segment and Enterprise Wide Reporting (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Schedule of Information about Reportable Segments

The following tables present information about reportable segments (in thousands):

										Project
		Product				Research				Consulting				Consolidated
Year Ended December 31, 2016
Research services revenues		$	215,216			$	—			$	—			$	215,216
Advisory services and events revenues			20,374				45,601				44,904				110,879
Total segment revenues			235,590				45,601				44,904				326,095
Segment expenses			41,528				51,132				26,647				119,307
Contribution margin (loss)			194,062				(5,531	)			18,257				206,788
Selling, marketing, administrative and other expenses															(174,157	)
Amortization of intangible assets															(831	)
Reorganization costs															(1,026	)
Other income and losses on investments															(65	)
Income before income taxes														$	30,709

										Project
		Product				Research				Consulting				Consolidated
Year Ended December 31, 2015
Research services revenues		$	210,268			$	—			$	—			$	210,268
Advisory services and events revenues			17,512				42,997				42,949				103,458
Total segment revenues			227,780				42,997				42,949				313,726
Segment expenses			38,615				51,510				27,320				117,445
Contribution margin (loss)			189,165				(8,513	)			15,629				196,281
Selling, marketing, administrative and other expenses															(172,130	)
Amortization of intangible assets															(891	)
Reorganization costs															(4,433	)
Other income and losses on investments															493
Income before income taxes														$	19,320

										Project
		Product				Research				Consulting				Consolidated
Year Ended December 31, 2014
Research services revenues		$	207,517			$	—			$	—			$	207,517
Advisory services and events revenues			20,759				48,658				35,128				104,545
Total segment revenues			228,276				48,658				35,128				312,062
Segment expenses			39,466				53,307				27,236				120,009
Contribution margin (loss)			188,810				(4,649	)			7,892				192,053
Selling, marketing, administrative and other expenses															(169,852	)
Amortization of intangible assets															(2,171	)
Reorganization costs															(1,817	)
Other income and losses on investments															176
Income before income taxes														$	18,389

Schedule of Net Long-lived Tangible Assets by Location

Net long-lived tangible assets by location as of December 31, 2016 and 2015 are as follows (in thousands):

		2016				2015
United States		$	22,150			$	24,914
United Kingdom			782				1,176
Europe (excluding United Kingdom)			259				381
Other			703				1,098
Total		$	23,894			$	27,569

Schedule of Revenues by Geographic Destination and as a Percentage of Total Revenues

Revenues by geographic destination and as a percentage of total revenues for the years ended December 31, 2016, 2015, and 2014 are as follows (dollars in thousands):

		2016				2015				2014
United States		$	252,222			$	241,025			$	232,440
Europe (excluding United Kingdom)			27,061				24,607				30,257
United Kingdom			14,808				16,815				16,804
Canada			13,806				14,424				17,089
Other			18,198				16,855				15,472
Total		$	326,095			$	313,726			$	312,062

		2016				2015				2014
United States			77	%			77	%			74	%
Europe (excluding United Kingdom)			8	%			8	%			10	%
United Kingdom			5	%			5	%			5	%
Canada			4	%			5	%			6	%
Other			6	%			5	%			5	%
Total			100	%			100	%			100	%

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- Definition

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+ References

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-Publisher FASB
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
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-Subparagraph (SX 210.5-03.1)
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Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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