Operating Segment and Enterprise Wide Reporting (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Schedule of Information about Reportable Segments, Disaggregation of Revenue by Product

The Company provides information by reportable segment in the tables below (in thousands):

	Research Segment			Consulting Segment			Events Segment			Consolidated
Year Ended December 31, 2021
Research revenues	$	325,340		$	—		$	—		$	325,340
Consulting revenues		47,247			108,867			—			156,114
Events revenues		—			—			12,861			12,861
Total segment revenues		372,587			108,867			12,861			494,315
Segment expenses		(118,155	)		(51,770	)		(8,518	)		(178,443	)
Selling, marketing, administrative and other expenses											(261,767	)
Amortization of intangible assets											(15,129	)
Acquisition and integration costs											(334	)
Interest expense, other expense, and gains on investments											(5,451	)
Income before income taxes										$	33,191

	Research Segment			Consulting Segment			Events Segment			Consolidated
Year Ended December 31, 2020
Research revenues	$	301,544		$	—		$	—		$	301,544
Consulting revenues		50,406			86,897			—			137,303
Events revenues		—			—			10,137			10,137
Total segment revenues		351,950			86,897			10,137			448,984
Segment expenses		(110,843	)		(40,168	)		(8,231	)		(159,242	)
Selling, marketing, administrative and other expenses											(248,105	)
Amortization of intangible assets											(19,683	)
Acquisition and integration costs											(5,779	)
Interest expense, other expense, and gains on investments											(3,242	)
Income before income taxes										$	12,933

	Research Segment			Consulting Segment			Events Segment			Consolidated
Year Ended December 31, 2019
Research revenues	$	303,801		$	—		$	—		$	303,801
Consulting revenues		55,812			75,074			—			130,886
Events revenues		—			—			27,010			27,010
Total segment revenues		359,613			75,074			27,010			461,697
Segment expenses		(120,882	)		(38,192	)		(18,968	)		(178,042	)
Selling, marketing, administrative and other expenses											(253,163	)
Amortization of intangible assets											(22,619	)
Acquisition and integration costs											(8,948	)
Interest expense, other expense, and gains on investments											(8,524	)
Loss before income taxes										$	(9,599	)

Schedule of Net Long-lived Tangible Assets by Location

Net long-lived tangible assets by location as of December 31, 2021 and 2020 are as follows (in thousands):

	2021		2020
United States	$	76,966	$	87,126
United Kingdom		10,667		1,216
Europe (excluding United Kingdom)		316		667
Asia Pacific		5,305		7,319
Total	$	93,254	$	96,328

Schedule of Revenues by Geographic Destination, Based on Location Products and Services and as a Percentage of Total Revenues

Revenues by geographic destination, based on the location products and services are consumed, and as a percentage of total revenues for the years ended December 31, 2021, 2020, and 2019 are as follows (dollars in thousands):

	2021		2020		2019
United States	$	381,662	$	356,288	$	362,867
Europe (excluding United Kingdom)		41,264		34,897		32,585
United Kingdom		21,913		15,741		21,316
Canada		17,213		14,005		17,246
Asia Pacific		26,768		22,969		22,842
Other		5,495		5,084		4,841
Total	$	494,315	$	448,984	$	461,697

	2021			2020			2019
United States		77	%		79	%		79	%
Europe (excluding United Kingdom)		9			8			7
United Kingdom		5			4			4
Canada		3			3			4
Asia Pacific		5			5			5
Other		1			1			1
Total		100	%		100	%		100	%