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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Jul. 27, 2024	Jan. 27, 2024
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 379,502	$ 367,542
Accumulated Amortization	270,342	258,588
Intangible Assets, Net	109,160	108,954
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	8 years
Intangible Assets, Gross (Excluding Goodwill)	$ 348,517	338,117
Accumulated Amortization	254,614	245,512
Intangible Assets, Net	$ 93,903	92,605
Trade names
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Useful life	8 years 9 months 18 days
Intangible Assets, Gross (Excluding Goodwill)	$ 14,080	13,050
Accumulated Amortization	8,999	8,723
Intangible Assets, Net	$ 5,081	4,327
Backlog intangibles
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Useful life	2 years
Intangible Assets, Gross (Excluding Goodwill)	$ 12,130	11,600
Accumulated Amortization	6,703	4,335
Intangible Assets, Net	$ 5,427	7,265
Non-compete agreements
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Useful life	3 years 3 months 18 days
Intangible Assets, Gross (Excluding Goodwill)	$ 75	75
Accumulated Amortization	26	18
Intangible Assets, Net	$ 49	$ 57

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Finite-Lived and Indefinite-Lived Intangible Assets

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
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-Name Accounting Standards Codification
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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount before accumulated amortization of intangible assets, excluding goodwill.

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

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