Note 17 - Concentration of Credit Risks	12 Months Ended
Apr. 30, 2025
Notes to Financial Statements
Concentration of Credit Risk [Text Block]	Note 17 - Concentration of Credit Risk: Financial instruments that potentially subject the Company to concentration of credit risk consist principally of cash deposits. Accounts at each institution are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to $250,000. At April 30, 2025 and 2024, the Company had $1,944,000 and $1,419,000, respectively, in excess of the FDIC insured limit. Management has concluded the excess does not represent a material risk, based on the creditworthiness of the counter parties. The Company maintains a deposit account of $305,000 at Flagstar Bank as security for a letter of credit in a similar amount (See Note 15).

Note 17 - Concentration of Credit Risks

12 Months Ended

Apr. 30, 2025

Concentration of Credit Risk [Text Block]

Note 17 - Concentration of Credit Risk:

Financial instruments that potentially subject the Company to concentration of credit risk consist principally of cash deposits. Accounts at each institution are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to $250,000. At April 30, 2025 and 2024, the Company had $1,944,000 and $1,419,000, respectively, in excess of the FDIC insured limit. Management has concluded the excess does not represent a material risk, based on the creditworthiness of the counter parties.

The Company maintains a deposit account of $305,000 at Flagstar Bank as security for a letter of credit in a similar amount (See Note 15).