Revenues (Narrative) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021 state store	Aug. 01, 2020 store state	Jul. 31, 2021 store state segment	Aug. 01, 2020 USD ($) store state
Product Information [Line Items]
Number of stores (store)	442	446	442	446
Number of reportable segments (segment) | segment			1
Number of states in which stores are located (state) | state	42	42	42	42
New stores opened during the period (store)	1	3	1	3
Stores substantially remodeled during the period (store)	2	0	7	1
Stores closed during the period (store)	1	3	2	5
Online revenues [Member]
Product Information [Line Items]
Impact on revenue | $				$ 30,555
Impact on revenue, percentage				64.30%
Revenue [Member] | Risk [Member] | Online revenues [Member]
Product Information [Line Items]
Revenue segment greater than 10 percent	14.70%	21.30%	16.40%	23.60%
Covid-19 [Member]
Product Information [Line Items]
Impact on revenue | $				$ (73,692)
Impact on revenue, percentage				(18.20%)