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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Goodwill by Segment and Changes in Carrying Amount of Goodwill | A summary of goodwill by segment and the changes in the carrying amount of goodwill is shown in the following table (in thousands):
| Research Segment |  |  | Consulting Segment |  |  | Total |
Balance at December 31, 2022 | $ | 234,020 |  |  | $ | 8,129 |  |  | $ | 242,149 |
Foreign currency translation adjustments |  | 2,038 |  |  |  | 70 |  |  |  | 2,108 |
Balance at December 31, 2023 |  | 236,058 |  |  |  | 8,199 |  |  |  | 244,257 |
Disposition (1) |  | (14,795 | ) |  |  | — |  |  |  | (14,795 | )
Foreign currency translation adjustments |  | (1,449 | ) |  |  | (54 | ) |  |  | (1,503 | )
Balance at December 31, 2024 | $ | 219,814 |  |  | $ | 8,145 |  |  | $ | 227,959 |
(1) See Note 2 - Divestiture for additional information. The amount of goodwill allocated to the divestiture was determined using a relative fair value approach.
Summary of Intangible Assets | A summary of Forrester’s intangible assets is as follows (in thousands):
| December 31, 2024 |
| Gross |  |  |  |  |  | Net |
| Carrying |  |  | Accumulated |  |  | Carrying |
| Amount |  |  | Amortization |  |  | Amount |
Amortizable intangible assets: |  |  |  |  |  |  |  |
Customer relationships | $ | 77,000 |  |  | $ | 49,946 |  |  | $ | 27,054 |
Technology |  | 13,000 |  |  |  | 12,978 |  |  |  | 22 |
Trademarks |  | 12,000 |  |  |  | 11,601 |  |  |  | 399 |
Total | $ | 102,000 |  |  | $ | 74,525 |  |  | $ | 27,475 |
| December 31, 2023 |
| Gross |  |  |  |  |  | Net |
| Carrying |  |  | Accumulated |  |  | Carrying |
| Amount |  |  | Amortization |  |  | Amount |
Amortizable intangible assets: |  |  |  |  |  |  |  |
Customer relationships | $ | 77,640 |  |  | $ | 42,091 |  |  | $ | 35,549 |
Technology |  | 16,524 |  |  |  | 15,950 |  |  |  | 574 |
Trademarks |  | 12,519 |  |  |  | 11,005 |  |  |  | 1,514 |
Total | $ | 106,683 |  |  | $ | 69,046 |  |  | $ | 37,637 |
Summary of Estimated Intangible Assets Amortization Expense | Estimated intangible asset amortization expense for each of the four succeeding years is as follows (in thousands):
2025 |  | $ | 8,734 |
2026 |  |  | 8,335 |
2027 |  |  | 8,324 |
2028 |  |  | 2,082 |
Total |  | $ | 27,475 |

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