Segments - Information regarding reportable segments (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 30, 2020	Apr. 30, 2019
Segment Reporting Information [Line Items]
Net sales	$ 405,131	$ 633,552
Cost of goods sold	280,730	397,488
Gross profit	124,401	236,064
Selling, general and administrative expenses	154,620	201,859
Depreciation and amortization	9,867	9,473
Loss (gain) on lease terminations	3,187	(829)
Operating profit (loss)	(43,273)	25,561
Operating Segments \| Wholesale
Segment Reporting Information [Line Items]
Net sales	378,871	570,639
Cost of goods sold	266,639	371,580
Gross profit	112,232	199,059
Selling, general and administrative expenses	112,600	147,258
Depreciation and amortization	8,292	7,522
Loss (gain) on lease terminations	(5)
Operating profit (loss)	(8,655)	44,279
Operating Segments \| Retail
Segment Reporting Information [Line Items]
Net sales	33,908	81,904
Cost of goods sold	21,739	44,899
Gross profit	12,169	37,005
Selling, general and administrative expenses	42,020	54,601
Depreciation and amortization	1,575	1,951
Loss (gain) on lease terminations	3,192	(829)
Operating profit (loss)	(34,618)	(18,718)
Elimination
Segment Reporting Information [Line Items]
Net sales	(7,648)	(18,991)
Cost of goods sold	$ (7,648)	$ (18,991)

Gain (loss) from lease agreement modifications.

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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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.

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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