Significant Accounting Policies - Calculation of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Apr. 30, 2024
Basic net income (loss) per share computation:
Net income (loss) attributable to common stockholders	$ 1,313	$ (2,566)	$ (7,300)
Weighted Average common shares - basic (in shares)	13,593,766	13,506,782
Basic net income (loss) per share (in dollars per share)	$ 0.10	$ (0.19)
Diluted net income (loss) per share computation:
Net income (loss) attributable to common stockholders	$ 1,313	$ (2,566)
Weighted Average common shares (in shares)	13,593,766	13,506,782
Incremental shares from assumed exercise of stock options (in shares)	448,613	0
Adjusted weighted average share - diluted (in shares)	14,042,379	13,506,782
Diluted net income (loss) per share (in dollars per share)	$ 0.09	$ (0.19)