Consolidated Balance Sheets (Parentheticals) - $ / shares	Apr. 30, 2025	Apr. 30, 2024
Statement of Financial Position [Abstract]
Preferred stock, no par value (in usd per share)	$ 0	$ 0
Preferred stock, shares issued (in shares)	0	0
Common stock, no par value (in usd per share)	$ 0	$ 0
Common stock, shares issued (in shares)	37,119,083	37,008,488
Common stock, shares outstanding (in shares)		37,008,488