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Note 6 - Property and Equipment - Components of Property and Equipment (Details) - USD ($)
Apr. 30, 2025
Apr. 30, 2024
May 01, 2019
Building and leasehold improvements $ 652,000 $ 652,000  
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Total property and equipment, net Total property and equipment, net Total property and equipment, net
Operating lease - right-of-use asset $ 3,037,000 $ 4,090,000 $ 9,575,000
Furniture and equipment 2,430,000 2,274,000  
Property, Plant and Equipment, Gross 6,119,000 7,016,000  
Accumulated depreciation and amortization (2,644,000) (2,576,000)  
Total property and equipment, net $ 3,475,000 $ 4,440,000