v3.26.1
Note 5 - Leases (Details Textual) - USD ($)
$ in Millions
9 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability $ 0.1 $ 0.4
Minimum [Member]    
Lessee, Operating Lease, Remaining Lease Term (Year) 1 year  
Maximum [Member]    
Lessee, Operating Lease, Remaining Lease Term (Year) 5 years