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v3.23.3

Operating Segments - Schedule of Information by Reportable Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | $ 113,431 | $ 127,679 | $ 362,690 | $ 400,896
Segment expenses | (46,519) | (51,182) | (150,499) | (159,437)
Selling, marketing, administrative and other expenses | (58,796) | (64,588) | (182,672) | (195,660)
Amortization of intangible assets | (3,041) | (3,352) | (9,175) | (10,068)
Restructuring and related costs | (19) | 0 | (12,140) | 0
Interest expense, other income, and gains on investments | (195) | (238) | (654) | (1,114)
Income before income taxes | 4,861 | 8,319 | 7,550 | 34,617
Research Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 87,123 | 96,053 | 270,650 | 293,391
Segment expenses | (31,749) | (33,058) | (99,792) | (100,135)
Consulting Segment Member |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 21,720 | 28,367 | 68,518 | 83,949
Segment expenses | (10,739) | (14,747) | (34,521) | (43,123)
Events Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 4,588 | 3,259 | 23,522 | 23,556
Segment expenses | (4,031) | (3,377) | (16,186) | (16,179)
Research [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 80,606 | 87,038 | 249,211 | 262,265
Research [Member] | Research Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 80,606 | 87,038 | 249,211 | 262,265
Research [Member] | Consulting Segment Member |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Research [Member] | Events Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Consulting [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 28,237 | 37,382 | 89,957 | 115,075
Consulting [Member] | Research Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 6,517 | 9,015 | 21,439 | 31,126
Consulting [Member] | Consulting Segment Member |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 21,720 | 28,367 | 68,518 | 83,949
Consulting [Member] | Events Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Events [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 4,588 | 3,259 | 23,522 | 23,556
Events [Member] | Research Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Events [Member] | Consulting Segment Member |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Events [Member] | Events Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total revenues | $ 4,588 | $ 3,259 | $ 23,522 | $ 23,556

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