Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($)	3 Months Ended
	Jul. 31, 2024	Jul. 31, 2023
Earnings Per Share [Abstract]
Net income	$ 2,705,000	$ 2,374,000
Basic EPS, Income	$ 2,705,000	$ 2,374,000
Basic EPS, Shares	4,896,730	4,928,974
Basic EPS, Per-Share Amount	$ 0.55	$ 0.48
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
Diluted EPS, Income	$ 2,705,000	$ 2,374,000
Diluted EPS, Shares	4,917,230	4,949,474
Diluted EPS, Per-Share Amount	$ 0.55	$ 0.48