Note 7 - Leases 1 (Details Textual) - USD ($)	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 92,000	$ 0
Amortization of Finance Lease Liability	6,000
Operating Lease, Lease Income	$ 119,000	$ 104,000
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income	Other Nonoperating Income
Building [Member]
Property, Plant, and Equipment, Lessor Asset under Operating Lease, before Accumulated Depreciation	$ 1,700,000
Property, Plant, and Equipment, Lessor Asset under Operating Lease, Accumulated Depreciation	$ 1,600,000
Property, Plant, and Equipment, Useful Life (Year)	40 years