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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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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Goodwill and Intangible Assets - Goodwill (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 30, 2020	Nov. 01, 2019	Oct. 30, 2020	Nov. 01, 2019	Sep. 21, 2020	Jan. 31, 2020
Goodwill [Line Items]
Goodwill	$ 425,314,000		$ 425,314,000			$ 416,487,000
Amortization expense	7,200,000	$ 7,100,000	21,300,000	$ 21,100,000
Impairment charges	$ 0	$ 0	0	$ 0
Delve Laboratories, Inc.
Goodwill [Line Items]
Increase in goodwill			$ 8,800,000
Goodwill					$ 8,831,000