EMPLOYEE BENEFIT PLANS	9 Months Ended
Jan. 31, 2026
Disclosure Text Block Supplement [Abstract]
Compensation and Employee Benefit Plans [Text Block]	NOTE D –EMPLOYEE BENEFIT PLANS During the three and nine months ended January 31, 2026, the Company made contributions of 7,442 and 26,615 shares, respectively, of its common stock to the Company’s profit-sharing plan and trust under Section 401(k) of the Internal Revenue Code. During the three and nine months ended January 31, 2025, the Company made contributions of 7,850 and 51,884 shares, respectively, of its common stock to the Company’s profit-sharing plan and trust under Section 401(k) of the Internal Revenue Code. Such contributions are in accordance with the Company’s discretionary match of employee voluntary contributions to this plan. Deferred compensation expense charged to selling and administrative expenses during the three and nine months ended January 31, 2026, was approximately $131,000 and $396,000, respectively, inclusive of approximately $21,000 and 67,000, respectively, of interest expense. Payments made related to deferred compensation were approximately $180,000 and $546,000, respectively, for the same periods. Deferred compensation expense charged to selling and administrative expenses during the three and nine months ended January 31, 2025, was approximately $142,000 and $425,000, respectively, inclusive of approximately $26,000 and $79,000, respectively, of interest expense. Payments made related to deferred compensation were approximately $183,000 and $541,000, respectively, for the same periods. The whole-life insurance policies on the lives of certain participants covered by deferred compensation agreements have been placed in a trust. Upon the death of any insured participant, cash received from life insurance policies in excess of the Company’s deferred compensation obligations to the estate or beneficiaries of the deceased, are also placed in the trust. These assets belong to the Company until a change of control event, as defined in the trust agreement, should occur. At that time, the Company is required to add sufficient cash to the trust so as to match the deferred compensation liability described above. Such funds will be used to continue the deferred compensation arrangements following a change of control. The life insurance policies amounted to $7.3 million at January 31, 2026 and $7.0 million at April 30, 2025. The business account and U.S. debt securities within the trust are valued on a Level 1 basis and amounted to $3.9 million and $3.5 million at January 31, 2026 and April 30, 2025, respectively. The fixed income corporate debt securities within the trust are valued on a Level 2 basis and amounted to $0.5 million at January 31, 2026 and $0.4 million at April 30, 2025. Level 2 securities are valued at the closing prices and are consistent with quoted prices of similar assets reported in active markets.

EMPLOYEE BENEFIT PLANS

9 Months Ended

Jan. 31, 2026

Disclosure Text Block Supplement [Abstract]

Compensation and Employee Benefit Plans [Text Block]

NOTE D –EMPLOYEE BENEFIT PLANS

During the three and nine months ended January 31, 2026, the Company made contributions of 7,442 and 26,615 shares, respectively, of its common stock to the Company’s profit-sharing plan and trust under Section 401(k) of the Internal Revenue Code. During the three and nine months ended January 31, 2025, the Company made contributions of 7,850 and 51,884 shares, respectively, of its common stock to the Company’s profit-sharing plan and trust under Section 401(k) of the Internal Revenue Code. Such contributions are in accordance with the Company’s discretionary match of employee voluntary contributions to this plan.

Deferred compensation expense charged to selling and administrative expenses during the three and nine months ended January 31, 2026, was approximately $131,000 and $396,000, respectively, inclusive of approximately $21,000 and 67,000, respectively, of interest expense. Payments made related to deferred compensation were approximately $180,000 and $546,000, respectively, for the same periods. Deferred compensation expense charged to selling and administrative expenses during the three and nine months ended January 31, 2025, was approximately $142,000 and $425,000, respectively, inclusive of approximately $26,000 and $79,000, respectively, of interest expense. Payments made related to deferred compensation were approximately $183,000 and $541,000, respectively, for the same periods.

The whole-life insurance policies on the lives of certain participants covered by deferred compensation agreements have been placed in a trust. Upon the death of any insured participant, cash received from life insurance policies in excess of the Company’s deferred compensation obligations to the estate or beneficiaries of the deceased, are also placed in the trust. These assets belong to the Company until a change of control event, as defined in the trust agreement, should occur. At that time, the Company is required to add sufficient cash to the trust so as to match the deferred compensation liability described above. Such funds will be used to continue the deferred compensation arrangements following a change of control. The life insurance policies amounted to $7.3 million at January 31, 2026 and $7.0 million at April 30, 2025. The business account and U.S. debt securities within the trust are valued on a Level 1 basis and amounted to $3.9 million and $3.5 million at January 31, 2026 and April 30, 2025, respectively. The fixed income corporate debt securities within the trust are valued on a Level 2 basis and amounted to $0.5 million at January 31, 2026 and $0.4 million at April 30, 2025. Level 2 securities are valued at the closing prices and are consistent with quoted prices of similar assets reported in active markets.