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Operating Segments (Tables)

9 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Schedule of Information about Reportable Segments

										Project
		Product				Research				Consulting				Consolidated
Three Months Ended September 30, 2017
Research services revenues		$	54,235			$	—			$	—			$	54,235
Advisory services and events revenues			3,353				10,379				12,402				26,134
Total segment revenues			57,588				10,379				12,402				80,369
Segment expenses			9,764				11,953				6,443				28,160
Contribution margin (loss)			47,824				(1,574	)			5,959				52,209
Selling, marketing, administrative and other expenses															(45,263	)
Amortization of intangible assets															(197	)
Reorganization costs															—
Other income and losses on investments															(626	)
Income before income taxes														$	6,123

										Project
		Product				Research				Consulting				Consolidated
Three Months Ended September 30, 2016
Research services revenues		$	52,727			$	—			$	—			$	52,727
Advisory services and events revenues			2,333				10,330				12,037				24,700
Total segment revenues			55,060				10,330				12,037				77,427
Segment expenses			8,884				11,586				5,522				25,992
Contribution margin (loss)			46,176				(1,256	)			6,515				51,435
Selling, marketing, administrative and other expenses															(43,675	)
Amortization of intangible assets															(208	)
Reorganization costs															—
Other income and losses on investments															(856	)
Income before income taxes														$	6,696

										Project
		Product				Research				Consulting				Consolidated
Nine Months Ended September 30, 2017
Research services revenues		$	160,553			$	—			$	—			$	160,553
Advisory services and events revenues			15,714				32,279				38,750				86,743
Total segment revenues			176,267				32,279				38,750				247,296
Segment expenses			32,788				36,510				18,886				88,184
Contribution margin (loss)			143,479				(4,231	)			19,864				159,112
Selling, marketing, administrative and other expenses															(138,432	)
Amortization of intangible assets															(582	)
Reorganization costs															—
Other income and losses on investments															(749	)
Income before income taxes														$	19,349

										Project
		Product				Research				Consulting				Consolidated
Nine Months Ended September 30, 2016
Research services revenues		$	160,998			$	—			$	—			$	160,998
Advisory services and events revenues			14,191				33,244				34,216				81,651
Total segment revenues			175,189				33,244				34,216				242,649
Segment expenses			30,306				36,026				17,465				83,797
Contribution margin (loss)			144,883				(2,782	)			16,751				158,852
Selling, marketing, administrative and other expenses															(135,463	)
Amortization of intangible assets															(627	)
Reorganization costs															(1,026	)
Other income and losses on investments															(765	)
Income before income taxes														$	20,971

X

- Definition

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599

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- References

No definition available.

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