Lease Accounting - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Lease costs
Net gains on lease modifications	$ (420)	$ (885)	$ (2,565)	$ (429)
Total lease costs	71,565	69,375	141,788	148,489
COVID-19 | Europe
Lease costs
Rent concessions from landlord	5,800	7,700	11,900	10,500
Cost of product sales
Lease costs
Operating lease costs	45,776	50,005	92,460	105,374
Amortization of leased assets	17	20	28	32
Variable lease costs	16,640	13,209	32,379	27,557
Short-term lease costs	126	181	231	420
Selling, general and administrative expenses
Lease costs
Operating lease costs	6,189	5,355	12,546	10,531
Amortization of leased assets	1,406	474	2,767	1,338
Variable lease costs	445	638	1,019	1,217
Short-term lease costs	1,123	170	2,294	1,959
Net gains on lease modifications
Lease costs
Net gains on lease modifications	(420)	(885)	(2,565)	(429)
Interest expense
Lease costs
Interest on lease liabilities	$ 263	$ 208	$ 629	$ 490