Note 9 - Income Taxes - Reconciliation of Income Tax (Details) (Parentheticals)	12 Months Ended
Jun. 30, 2026
Tax Jurisdiction of Domicile [Extensible Enumeration]	Income Tax Jurisdiction, Domestic Federal [Member]

Indicates tax jurisdiction of domicile.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Name:	us-gaap_TaxJurisdictionOfDomicileExtensibleEnumeration
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration