Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets, estimated useful lives			13 years
Amortization of intangible assets	$ 615,000	$ 615,000	$ 1,845,000	$ 1,845,000
Carrying value of finite-lived intangible assets, net	20,904,000	$ 23,364,000	20,904,000	$ 23,364,000	$ 22,749,000
DEXYCU [Member]
Finite Lived Intangible Assets [Line Items]
Carrying value of finite-lived intangible assets, net	20,900,000		$ 20,900,000
DEXYCU [Member] | Icon Bioscience Inc [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets, estimated useful lives			8 years 6 months
Annual amortization expense	$ 2,500,000		$ 2,500,000