Note 9 - Property and Equipment - Components of Property and Equipment (Details) - USD ($)	Jan. 31, 2025	Apr. 30, 2024	May 01, 2019
Building and leasehold improvements	$ 652,000	$ 652,000
Operating lease - right-of-use asset	3,306,000	4,090,000	$ 9,575,000
Furniture and equipment	2,426,000	2,274,000
Property, Plant and Equipment, Gross	6,384,000	7,016,000
Accumulated depreciation and amortization	(2,612,000)	(2,576,000)
Total property and equipment, net	$ 3,772,000	$ 4,440,000