Significant Accounting Policies - Additional Information (Detail) $ in Thousands		12 Months Ended
	Oct. 22, 2019 USD ($)	Dec. 31, 2023 USD ($) NumberOfSegment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Oct. 31, 2021 USD ($)
Number of operating segments | NumberOfSegment		1
Revenue		$ 8,226	$ 1,327	$ 29,575
Deferred revenue		75	205
Bausch
Milestone Payments Received				5,000
Upfront payment	$ 5,000
Pre-launch milestone payments				10,000
Bausch | Upfront Payment
Deferred revenue				5,000	$ 5,000
BioCryst
Upfront payment		5,000
Aura
Milestone Payments Received		1,400
License [Member]
Revenue		$ 8,200	$ 1,300	29,600
License [Member] | Arctic Vision Limited
Consideration received for territory expansion				$ 8,000