Corporate Bond - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Mar. 31, 2019
Debt Instrument [Line Items]
Corporate bond	$ 5,000		$ 5,000		$ 5,000
Corporate Bond Securities
Debt Instrument [Line Items]
Amortization expense	$ 55	$ 50	$ 164	$ 147
Corporate Bond Securities | Shinogi And Company Limited | Option And Collaboration Agreement
Debt Instrument [Line Items]
Corporate bond						$ 5,000