Number of Retail Locations

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ 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)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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Fair Value - Additional Information (Detail) $ in Thousands	3 Months Ended			6 Months Ended
Fair Value - Additional Information (Detail) $ in Thousands	Jul. 31, 2020 USD ($)	Apr. 30, 2020 USD ($) Location	Jul. 31, 2019 USD ($)	Jul. 31, 2020 USD ($) Location	Jul. 31, 2019 USD ($)	Jan. 31, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of retail locations \| Location		39
Impairment charges	$ 0	$ 14,528	$ 0		$ 0
Right-of-use assets, Carrying value	$ 1,134,678		$ 1,085,543	$ 1,134,678	$ 1,085,543	$ 1,170,531
COVID-19
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of retail locations \| Location				39
Right-of-use assets, Carrying value		$ 96,523