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Fair Value Measurements (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Fair Value Disclosures [Abstract]
Long-lived assets, impairment charges	$ 211,000	$ 561,000	$ 2,700,000	$ 604,000
Operating lease, impairment loss	$ 0	$ 0	$ 0	$ 0

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- References

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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-Section 50
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-SubTopic 10
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Amount of loss from impairment of right-of-use asset from operating lease.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 25
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121593497&loc=SL77918431-209957

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