Significant Accounting Policies - Schedule of Calculation of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Oct. 31, 2024	Jul. 31, 2024	Oct. 31, 2023	Jul. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Basic net income (loss) per share computation:
Net income (loss) attributable to common stockholders	$ 728	$ 1,313	$ (2,071)	$ (2,566)	$ 2,041	$ (4,637)
Weighted Average common shares - basic (in shares)	13,593,766		13,497,061		13,593,766	13,529,629
Basic net income (loss) per share (in dollars per share)	$ 0.05		$ (0.15)		$ 0.15	$ (0.34)
Diluted net income (loss) per share computation:
Net income (loss) attributable to common stockholders	$ 728		$ (2,071)		$ 2,041	$ (4,637)
Weighted Average common shares (in shares)	13,593,766		13,497,061		13,593,766	13,529,629
Incremental shares from assumed exercise of stock options (in shares)	423,187		0		435,900	0
Adjusted weighted average share – diluted (in shares)	14,016,953		13,497,061		14,029,666	13,529,629
Diluted net income (loss) per share (in dollars per share)	$ 0.05		$ (0.15)		$ 0.15	$ (0.34)