Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Apr. 26, 2025	Jan. 25, 2025
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 509,172	$ 509,172
Accumulated Amortization	301,404	289,426
Intangible Assets, Net	207,768	219,746
UtiliQuest
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	4,700	4,700
Accumulated Amortization	0	0
Intangible Assets, Net	$ 4,700	4,700
Customer relationships
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Useful life	9 years 6 months
Intangible Assets, Gross (Excluding Goodwill)	$ 452,417	452,417
Accumulated Amortization	277,691	270,210
Intangible Assets, Net	$ 174,726	182,207
Trade names
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Useful life	8 years 1 month 6 days
Intangible Assets, Gross (Excluding Goodwill)	$ 14,080	14,080
Accumulated Amortization	9,440	9,293
Intangible Assets, Net	$ 4,640	4,787
Backlog Intangibles
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Useful life	1 year 3 months 18 days
Intangible Assets, Gross (Excluding Goodwill)	$ 37,900	37,900
Accumulated Amortization	14,236	9,890
Intangible Assets, Net	$ 23,664	28,010
Non-compete agreements
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Useful life	2 years 6 months
Intangible Assets, Gross (Excluding Goodwill)	$ 75	75
Accumulated Amortization	37	33
Intangible Assets, Net	$ 38	$ 42

Finite-Lived and Indefinite-Lived Intangible Assets

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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