Segment Information (Tables)

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Schedule of segment reporting information, by segment

The tables below present information about the Company’s reportable segments for the periods indicated (in thousands).

Three Months Ended March 31, 2021	Research		Conferences		Consulting		Consolidated
Revenues	$	979,732	$	24,802	$	99,504	$	1,104,038
Gross contribution	724,372		13,896		39,098		777,366
Corporate and other expenses							(551,954)
Operating income							$	225,412

Three Months Ended March 31, 2020	Research		Conferences		Consulting		Consolidated
Revenues	$	909,291	$	13,870	$	95,730	$	1,018,891
Gross contribution	653,469		(6,060)		29,382		676,791
Corporate and other expenses							(552,073)
Operating income							$	124,718

Schedule of reconciliation of segment gross contribution to net income (loss)

The table below provides a reconciliation of total segment gross contribution to net income for the periods indicated (in thousands).

	Three Months Ended
	March 31,
	2021		2020
Total segment gross contribution	$	777,366	$	676,791
Costs and expenses:
Cost of services and product development - unallocated (1)	7,795		(822)
Selling, general and administrative	487,255		496,639
Depreciation and amortization	56,264		54,696
Acquisition and integration charges	640		1,560
Operating income	225,412		124,718
Interest expense and other, net	(10,659)		(27,864)
Less: Provision for income taxes	50,653		21,757
Net income	$	164,100	$	75,097

(1)The unallocated amounts consist of certain bonus and fringe costs recorded in consolidated Cost of services and product development that are not allocated to segment expense. The Company’s policy is to allocate bonuses to segments at 100% of a segment employee’s target bonus. Amounts above or below 100% are absorbed by corporate.