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Basis of Presentation - Textuals (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Schedule of Equity Method Investments [Line Items]
Deferred lease payments	$ 275,294
Proceeds from borrowings - revolving facility	676,019	$ 1,102,973
Repayment of borrowings - revolving facility	676,019	942,973
Cash and cash equivalents	252,798	$ 39,568	$ 197,372	$ 70,138
Accounts Payable [Member]
Schedule of Equity Method Investments [Line Items]
Deferred lease payments	$ 8,000
KL North America BV ("KLNA") and Fabco Holding B.V. ("Fabco")
Schedule of Equity Method Investments [Line Items]
Percentage of ownership interest	49.00%
Karl Lagerfeld Holding B.V. ("KLH")
Schedule of Equity Method Investments [Line Items]
Percentage of ownership interest	19.00%