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BUSINESS COMBINATIONS - Goodwill (Details) - USD ($) $ in Thousands	Mar. 03, 2025	Jan. 31, 2025	Oct. 23, 2024	Oct. 03, 2025	Dec. 27, 2024
Business Combination, Goodwill
Goodwill				$ 177,506	$ 140,991
Alternative Power Generation, Inc.
Business Combination, Goodwill
Business acquisition, goodwill, expected tax deductible amount	$ 31,600
Goodwill	$ 31,613
Goodwill, Name of Segment	Energy
Business Combination, Goodwill, Reporting Unit Assignment, Incomplete	false
Alpha Inspections, Inc.
Business Combination, Goodwill
Business acquisition, goodwill, expected tax deductible amount		$ 4,900
Goodwill		$ 4,902
Goodwill, Name of Segment		Engineering and Consulting
Business Combination, Goodwill, Reporting Unit Assignment, Incomplete		false
Enica Engineering, PLLC
Business Combination, Goodwill
Business acquisition, goodwill, expected tax deductible amount			$ 9,800
Goodwill			$ 9,847
Goodwill, Name of Segment			Energy
Business Combination, Goodwill, Reporting Unit Assignment, Incomplete			false

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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