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Stock Options and Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended			3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Aug. 31, 2023	Jul. 31, 2025	Jul. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Director's fees paid with shares of common stock in lieu of cash				$ 180
Director's fees paid with shares of common stock in lieu of cash included in stock-based compensation				$ 90
2017 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future issuance (in shares)			168,791
2017 Plan \| Restricted Stock Units (RSUs) \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance (in shares)			64,633
2023 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future issuance (in shares)				291,326
2023 Plan \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years	3 years
Stock-based compensation expense				$ 431	$ 318
Remaining estimated compensation expense				$ 3,877
2023 Plan \| Restricted Stock Units (RSUs) \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units granted (in shares)	72,728
Shares available for issuance (in shares)			374,633
Increase in number of shares reserved for issuance (in shares)			310,000