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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended
	Jan. 31, 2021	Dec. 31, 2019	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Apr. 01, 2023	Mar. 31, 2023	Feb. 01, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares available for future issuance (in shares)			20,441,610		20,441,610		5,213,194	16,340,576
Common shares outstanding (in shares)			2,245,595		2,245,595			590,317
Number of options, granted (in shares)					2,080,263
Share based compensation expense			$ 10,501	$ 8,051	$ 21,154	$ 15,606
Related Party
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense			$ 0	100	$ 0	200
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units outstanding (in shares)			4,036,663		4,036,663			3,692,979
Unrecognized equity-based compensation related to unvested stock options and RSUs			$ 38,300		$ 38,300
Remaining weighted average service period for recognition					2 years 10 months 6 days
Restricted stock units, grants in period (in shares)					1,559,349
Restricted stock units \| Related Party
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized equity-based compensation related to unvested stock options and RSUs			100		$ 100
Share based compensation expense				$ 100	100	$ 200
Restricted stock units, grants in period (in shares)	73,155
Award vesting period	4 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized equity-based compensation related to unvested stock options and RSUs			$ 50,700		$ 50,700
Remaining weighted average service period for recognition					2 years 9 months
2019 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares available for future issuance (in shares)		5,500,000	2,245,595		2,245,595
Maximum number of shares issued (in shares)		16,500,000
Percentage of common stock outstanding		4.00%
Common shares outstanding (in shares)			10,747,935		10,747,935
2019 Equity Incentive Plan \| Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units outstanding (in shares)			4,036,663		4,036,663
2018 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares outstanding (in shares)			2,624,421		2,624,421
Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares available for future issuance (in shares)									5,000,000
Number of options, granted (in shares)					0