Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Oct. 30, 2021	Oct. 24, 2020	Oct. 30, 2021	Oct. 24, 2020	Jan. 30, 2021
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 4,100	$ 5,000	$ 13,500	$ 15,500
Intangible Assets, Gross (Excluding Goodwill)	327,067		327,067		$ 327,067
Accumulated Amortization	221,203		221,203		207,745
Intangible Assets, Net	105,864		105,864		119,322
UtiliQuest
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	4,700		4,700		4,700
Accumulated Amortization	0		0		0
Intangible Assets, Net	$ 4,700		4,700		4,700
Customer relationships
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Usesul life	8 years 8 months 12 days
Intangible Assets, Gross (Excluding Goodwill)	$ 312,017		312,017		312,017
Accumulated Amortization	211,835		211,835		198,604
Intangible Assets, Net	$ 100,182		100,182		113,413
Trade names
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Usesul life	8 years 4 months 24 days
Intangible Assets, Gross (Excluding Goodwill)	$ 10,350		10,350		10,350
Accumulated Amortization	9,368		9,368		9,141
Intangible Assets, Net	$ 982		$ 982		$ 1,209

Finite-Lived and Indefinite-Lived Intangible Assets

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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

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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

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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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