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Organization and principal accounting policies - Additional information (Details) | 9 Months Ended
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Oct. 31, 2020 segment
Property, Plant and Equipment [Line Items] |
Number of reportable segments (segment) | 3
Minimum |
Property, Plant and Equipment [Line Items] |
Seasonal revenues, fourth quarter sales, percent | 35.00%
Maximum |
Property, Plant and Equipment [Line Items] |
Seasonal revenues, fourth quarter sales, percent | 40.00%

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- Definition Seasonal Revenues, Fourth Quarter Sales, Percent + References No definition available. + Details
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599 + Details
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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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- Details
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- Details
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