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SUPPLEMENTAL FINANCIAL STATEMENT DATA - Goodwill (Details) $ in Thousands	3 Months Ended
	Apr. 04, 2025 USD ($)
Changes in carrying value of goodwill
Goodwill at beginning of period	$ 140,991
Additional Purchase Cost	32,931
Goodwill at end of period	173,922
Energy
Changes in carrying value of goodwill
Goodwill at beginning of period	139,222
Additional Purchase Cost	25,438
Goodwill at end of period	164,660
Engineering and Consulting
Changes in carrying value of goodwill
Goodwill at beginning of period	1,769
Additional Purchase Cost	7,493
Goodwill at end of period	$ 9,262

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- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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