Business Combinations - Narrative (Details) € in Thousands, $ in Thousands			3 Months Ended		6 Months Ended
	Jul. 30, 2024 USD ($)	Jul. 30, 2024 EUR (€)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) business	Jun. 30, 2024 USD ($) business	Dec. 31, 2024 USD ($)	Jul. 30, 2024 EUR (€)
Business Combination, Separately Recognized Transaction [Line Items]
Goodwill			$ 876,790		$ 876,790		$ 845,939
Acuren British Virgin Islands | Acuren British Virgin Islands
Business Combination, Separately Recognized Transaction [Line Items]
Fair value of investment by Acuren BVI	$ 4,000
2025 Business Acquisitions
Business Combination, Separately Recognized Transaction [Line Items]
Number of businesses acquired | business					(2)
Cash paid to acquire business					$ 16,700
Revenue for the period			1,800		3,000
Goodwill			3,900		3,900
2025 Business Acquisitions | U.S. Reporting Unit
Business Combination, Separately Recognized Transaction [Line Items]
Goodwill			2,500		2,500
2025 Business Acquisitions | Canadian Reporting Unit
Business Combination, Separately Recognized Transaction [Line Items]
Goodwill			$ 1,400		$ 1,400
ASP Acuren Acquisition
Business Combination, Separately Recognized Transaction [Line Items]
Cash paid to acquire business | €		€ 1,871,642
Goodwill | €								€ 865,599
Total consideration | €		€ 1,875,642
Post-closing escrow amount returned to buyers	5,200
Measurement period net working capital adjustment and settlement	$ 400
Three Company | Predecessor
Business Combination, Separately Recognized Transaction [Line Items]
Number of businesses acquired | business						(3)
Cash paid to acquire business						$ 47,600
Revenue for the period				$ 6,400		7,500
Goodwill				$ 22,200		$ 22,200