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SIGNIFICANT ACCOUNTING POLICIES - Textuals (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2020 | Apr. 30, 2019 | Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2018 | Jan. 31, 2017
Accounting Policies [Line Items] |  |  |  |  |  |
Impairment charge on leasehold improvements |  | $ 9,600 |  |  |  |
Corporate income tax rate |  |  | 21.00% | 21.00% | 33.80% | 35.00%
Lock up period after vesting |  |  | 2 years |  |  |
Anti-dilutive shares excluded from diluted net income per share calculation |  |  | 692,000 | 336,000 | 466,000 |
Common stock issued in connection with exercise or vesting of equity awards |  |  | 8,851 | 168,179 | 201,968 |
Treasury shares re-issued in connection with the exercise or vesting of equity awards |  |  | 619,651 | 150,809 |  |
Selling, general and administrative expenses |  |  | $ 832,180 | $ 834,763 | $ 855,247 |
Advertising expense |  |  | 94,700 | 87,800 | 105,600 |
Prepaid advertising | $ 8,700 |  | $ 8,700 | 9,000 |  |
KL North America BV ("KLNA") and Fabco Holding B.V. ("Fabco") |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Percentage of ownership interest | 49.00% |  | 49.00% |  |  |
Karl Lagerfeld Holding B.V. ("KLH") |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Percent of interest acquired | 19.00% |  | 19.00% |  |  |
Wholesale shipping and handling costs |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Selling, general and administrative expenses |  |  | $ 138,800 | 125,900 | 120,200 |
Restricted Stock Units (RSUs) |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Vesting and exercise period of awards |  |  | 3 years |  |  |
Restricted Stock Units (RSUs) | Long-Term Incentive Stock Plan |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Vesting and exercise period of awards |  |  | 3 years |  |  |
Performance Shares [Member] |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Vesting and exercise period of awards |  |  | 3 years |  |  |
Lock up period after vesting |  |  | 2 years |  |  |
Minimum |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Intangible assets, estimated useful lives |  |  | 5 years |  |  |
Minimum | Performance Shares [Member] |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Vesting and exercise period of awards |  |  | 2 years |  |  |
Maximum |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Intangible assets, estimated useful lives |  |  | 17 years |  |  |
Maximum | Performance Shares [Member] |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Vesting and exercise period of awards |  |  | 5 years |  |  |
Maximum | Stock Options |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Vesting and exercise period of awards |  |  | 10 years |  |  |
Retail |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Goodwill written off |  |  |  |  | 700 |
Wilsons, G.H. Bass and DKNY Stores [Member] |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Impairment charge on leasehold improvements | $ 21,800 |  |  |  |  |
Wilsons, G.H. Bass and DKNY Stores [Member] | Furniture and fixtures |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Impairment charge on leasehold improvements |  |  | $ 21,800 | 2,800 |  |
Wilsons, G H Bass And Vilebrequin Stores | Furniture and fixtures |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Impairment charge on leasehold improvements |  |  |  | $ 2,800 | 6,500 |
Certain Customers' Stores [Member] | Furniture and fixtures |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Impairment charge on leasehold improvements |  |  |  |  | 700 |
Wilsons and G.H. Bass Stores [Member] | Furniture and fixtures |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Impairment charge on leasehold improvements |  |  |  |  | $ 10,500 |

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