Lease Accounting - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Lease costs
Net gains on lease terminations	$ (21)	$ 0	$ (450)	$ 0
Total lease costs	74,734	89,451	223,223	271,598
COVID-19 | Europe
Lease costs
Rent concessions from landlord	(8,000)		(18,400)
Cost of product sales
Lease costs
Operating lease cost	50,684	56,370	156,058	173,935
Amortization of leased assets	5	132	37	219
Variable lease costs	14,755	24,592	42,312	74,500
Short-term lease costs	142	0	562	0
Selling, general and administrative expenses
Lease costs
Operating lease cost	5,191	6,746	15,722	17,730
Amortization of leased assets	1,185	561	2,523	1,741
Variable lease costs	33	677	1,250	2,132
Short-term lease costs	2,407	208	4,366	603
Net gains on lease modifications
Lease costs
Net gains on lease terminations	(21)	0	(450)	0
Interest expense
Lease costs
Interest on lease liabilities	$ 353	$ 165	$ 843	$ 738