Leases - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	May 02, 2020	May 04, 2019	Feb. 01, 2020
Lessee, Lease, Description [Line Items]
Impairment loss	$ 4.1	$ 1.1
Accumulated amortization	1.0	$ 0.2	$ 0.8
Lease not yet commenced, amount	$ 0.9
Maximum
Lessee, Lease, Description [Line Items]
Term of contract	10 years
Maximum | Office Equipment
Lessee, Lease, Description [Line Items]
Term of contract	6 years
Minimum
Lessee, Lease, Description [Line Items]
Term of contract	5 years
Minimum | Office Equipment
Lessee, Lease, Description [Line Items]
Term of contract	2 years