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Note 6 - Leases (Details Textual) - USD ($)
1 Months Ended
Mar. 31, 2025
Jun. 30, 2024
Finance Lease, Liability   $ 0
Operating Lease, Right-of-Use Asset $ 1,111,000 829,000
Operating Lease, Liability 1,103,000 1,289,000
Office Space in Berwyn, Pennsylvania [Member]    
Operating Lease, Undiscounted Minimum Monthly Payment   13,000
Operating Lease, Right-of-Use Asset   500,000
Operating Lease, Liability   $ 500,000
Lessee, Operating Lease, Discount Rate   12.30%
Oceanside California Warehouse [Member]    
Gain (Loss) on Termination of Lease $ 100,000