Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Apr. 30, 2025	Apr. 30, 2024
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Common stock, no par value	$ 0	$ 0
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	14,612,706	15,653,463
Common stock, shares outstanding	14,612,706	15,653,463
Long-term Debt and Lease Obligation, Current	$ 7,659	$ 2,722
Total long-term debt	$ 365,825	$ 371,761