Note 12 - Earnings Per Share (Details Textual) shares in Thousands			3 Months Ended	15 Months Ended
Oct. 12, 2023	Sep. 28, 2023	Apr. 30, 2024 shares	Apr. 30, 2023 shares	Apr. 30, 2024 shares
Weighted Average Number of Shares Outstanding, Basic (in shares)			1,406	1,406	1,400
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	10	10

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482689/260-10-45-10

Name:	us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration