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Note 5 - Leases (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Jun. 30, 2024
Lease, Cost $ 25,000 $ 34,000 $ 76,000 $ 101,000  
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income Other Nonoperating Income Other Nonoperating Income Other Nonoperating Income  
Operating Lease, Lease Income $ 28,000 $ 23,000 $ 75,000 $ 78,000  
Other Assets [Member]          
Lessor, Cost, Contracts Asset 0   0   $ 2,000
General and Administrative Expense [Member]          
Lease, Cost $ 25,000 $ 33,000 $ 75,000 $ 99,000