Stockholder's Equity - Additional Information (Detail) - USD ($)			1 Months Ended	12 Months Ended
	Feb. 14, 2024	Dec. 23, 2022	Apr. 30, 2024	Apr. 30, 2024	Apr. 30, 2023	May 21, 2021
Class of Warrant or Right [Line Items]
Common stock, per share			$ 0.001	$ 0.001	$ 0.001
Cash proceeds from issuance of common stock				$ 96,945,000	$ 56,582,000
Net proceeds from offering, after deducting estimated expenses	$ 150,100,000
Underwriting discounts, commissions, and other offering expenses	500,000
Maximum aggregate public offering price of securities to be issued under shelf registration statement						$ 300,000,000
Maximum [Member]
Class of Warrant or Right [Line Items]
Aggregate offering price of common stock authorized	$ 100,000,000
Common Stock [Member]
Class of Warrant or Right [Line Items]
Common stock, shares issued				7,016,312	9,484,199
Aggregate number of shares to sell under subscription agreements	7,016,312	9,484,199
Price per share under subscription agreements	$ 15.25	$ 6
Pre-funded Warrants [Member]
Class of Warrant or Right [Line Items]
Price per share under subscription agreements	15.249	5.999
Exercise price per share of each pre-funded warrant	$ 0.001	$ 0.001
Pre-funded Warrants [Member] | Maximum [Member]
Class of Warrant or Right [Line Items]
Warrants to purchase shares of common stock	3,483,688	182,470
Direct Offering [Member]
Class of Warrant or Right [Line Items]
Net proceeds from offering, after deducting estimated expenses		$ 57,700,000
Underwriting discounts, commissions, and other offering expenses		$ 300,000
Direct Offering [Member] | Pre-funded Warrants [Member]
Class of Warrant or Right [Line Items]
Common stock, shares issued			182,453