Segment and Geographic Information - Geographic Location Data (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018	Feb. 01, 2019	Jan. 31, 2019
Segment Reporting Information [Line Items]
Charge related to the amortization of intangible assets	$ 1,500	$ 800	$ 3,054	$ 1,700
Operating lease right-of-use assets	91,119	0	91,119	0		$ 0
ASU 2016-02
Segment Reporting Information [Line Items]
Operating lease right-of-use assets					$ 97,000
Company Stores | ASU 2016-02
Segment Reporting Information [Line Items]
Operating lease right-of-use assets	41,700		41,700
Watch and Accessory Brands | ASU 2016-02
Segment Reporting Information [Line Items]
Operating lease right-of-use assets	49,400		49,400
United States
Segment Reporting Information [Line Items]
Unallocated corporate expenses	4,100	10,600	13,100	20,700
United States | Watch and Accessory Brands | MVMT Watches, Inc.
Segment Reporting Information [Line Items]
Charge related to the amortization of intangible assets	1,100	1,000	2,600	1,000
International
Segment Reporting Information [Line Items]
Profits related to the company's supply chain operations	$ 14,800	$ 11,300	$ 27,800	$ 22,300