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Note 7 - Leases (Details Textual) - USD ($) | 12 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
Lease, Cost | $ 102,000 | $ 136,000
Operating Lease, Lease Income | $ 104,000 | $ 101,000
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
Other Assets [Member] |  |
Lessor, Cost, Contracts Asset | $ 0 | $ 2,000
General and Administrative Expense [Member] |  |
Lease, Cost | $ 100,000 | $ 133,000

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