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Goodwill and Intangible Assets - Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 27, 2024	Jan. 27, 2024	Aug. 31, 2023
Goodwill [Roll Forward]
Goodwill	$ 569,419	$ 561,022
Accumulated Impairment Losses	(249,031)	(249,031)
Total	320,388	$ 311,991
Bigham
Goodwill [Roll Forward]
Goodwill from fiscal 2025 acquisitions	8,641
Total			$ 39,200
Telecommunications Construction Contractor
Goodwill [Roll Forward]
Goodwill from fiscal 2025 acquisitions	$ (244)