Fair Value Measurements (Narrative) (Details) - USD ($)	3 Months Ended	6 Months Ended
Aug. 03, 2019	Aug. 04, 2018	Aug. 03, 2019	Aug. 04, 2018
Fair Value Disclosures [Abstract]
Long-lived assets, impairment charges	$ 0	$ 0	$ 40,000	$ 0
Remaining unamortized basis			$ 3,000

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration