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Stockholders' Equity - Stock-based Compensation Expense and Valuation Information - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Class Of Stock [Line Items]
Total unrecognized compensation cost related to unvested stock option grants	$ 0.6		$ 0.6
Expected term	6 years	6 years	6 years	6 years
Employee Stock Option
Class Of Stock [Line Items]
Total unrecognized compensation cost related, weighted average period			2 years 3 months 18 days
Restricted stock units (RSUs) [Member]
Class Of Stock [Line Items]
Total unrecognized compensation cost related, weighted average period			11 months 19 days
Restricted stock units (RSUs) [Member] | Maximum [Member]
Class Of Stock [Line Items]
Unrecognized stock-based compensation expense	$ 0.2		$ 0.2

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