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v3.25.2

Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization | $ 5,015 | $ 3,910 | $ 9,862 | $ 8,700
Capital expenditures | 3,906 | 10,365 | 6,640 | 16,538
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization | 3,345 | 2,980 | 6,606 | 6,847
Capital expenditures | 2,006 | 8,013 | 3,039 | 11,965
Operating Segments | Executive Search |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization | 1,341 | 880 | 2,527 | 2,140
Capital expenditures | 1,878 | 5,518 | 2,731 | 8,425
Operating Segments | On-Demand Talent |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization | 1,474 | 1,651 | 2,974 | 3,616
Capital expenditures | 109 | 442 | 180 | 659
Operating Segments | Heidrick Consulting |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization | 530 | 449 | 1,105 | 1,091
Capital expenditures | 19 | 2,053 | 128 | 2,881
Operating Segments | Americas | Executive Search |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization | 647 | 723 | 1,170 | 1,486
Capital expenditures | 1,214 | 519 | 1,600 | 1,032
Operating Segments | Europe | Executive Search |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization | 442 | 42 | 863 | 337
Capital expenditures | 639 | 4,418 | 1,034 | 6,387
Operating Segments | Asia Pacific | Executive Search |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization | 252 | 115 | 494 | 317
Capital expenditures | 25 | 581 | 97 | 1,006
Research and development |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization | 1,501 | 809 | 2,938 | 1,563
Capital expenditures | 1,827 | 1,255 | 3,452 | 3,094
Global Operations Support |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization | 169 | 121 | 318 | 290
Capital expenditures | $ 73 | $ 1,097 | $ 149 | $ 1,479

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