Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($)	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023
Earnings Per Share of Common Stock
Net income	$ 7,558,000	$ 4,757,000
Basic EPS, Income	$ 7,558,000	$ 4,757,000
Basic EPS, Shares	4,913,676	4,930,835
Basic EPS, Per-Share Amount	$ 1.54	$ 0.96
Effect of dilutive Convertible Preferred Stock, Income
Effect of dilutive Convertible Preferred Stock, Shares	20,500	20,500
Effect of dilutive Convertible Preferred Stock, Per-Share Amount	$ (0.01)
Diluted EPS, Income	$ 7,558,000	$ 4,757,000
Diluted EPS, Shares	4,934,176	4,951,335
Diluted EPS, Per-Share Amount	$ 1.53	$ 0.96