Business Combinations - Summary of Preliminary Fair Value of the Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Aug. 04, 2025	May 14, 2025	Jul. 30, 2024
NV5 Global, Inc.
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Intangible assets	$ 720,000
ASP Acuren Acquisition
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Intangible assets		$ 775,000	$ 775,000
Customer relationships | NV5 Global, Inc.
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Intangible assets	590,000
Customer relationships | ASP Acuren Acquisition
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Intangible assets		670,000
Customer backlog | NV5 Global, Inc.
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Intangible assets	88,000
Trade name | NV5 Global, Inc.
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Intangible assets	39,000
Trade names and trademarks | ASP Acuren Acquisition
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Intangible assets		100,000
Developed technology | NV5 Global, Inc.
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Intangible assets	$ 3,000
Developed technology | ASP Acuren Acquisition
Intangible Asset, Acquired, Indefinite-Lived [Line Items]
Intangible assets		$ 5,000