CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Apr. 30, 2023	Apr. 30, 2022
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	13,558,650	13,522,441
Common stock, shares outstanding (in shares)	13,544,228	13,522,441