Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e32059-109318

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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

Note 6 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended			6 Months Ended		12 Months Ended
	Aug. 04, 2018	Dec. 30, 2017	Jul. 29, 2017	Aug. 04, 2018	Jul. 29, 2017	Feb. 02, 2019	Dec. 30, 2017
Effective Income Tax Rate Reconciliation, Percent, Total	29.30%		126.80%	23.90%	37.30%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent							34.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount		$ 1.4
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent						21.00%