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SUPPLEMENTAL FINANCIAL STATEMENT DATA - Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 29, 2023 USD ($)
Changes in carrying value of goodwill
Goodwill at beginning of period	$ 130,124
Additional Purchase Cost	1,020
Goodwill at end of period	131,144
Energy
Changes in carrying value of goodwill
Goodwill at beginning of period	129,375
Goodwill at end of period	129,375
Engineering and Consulting
Changes in carrying value of goodwill
Goodwill at beginning of period	749
Additional Purchase Cost	1,020
Goodwill at end of period	$ 1,769

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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X

- Definition

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.

+ References

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