Revenue - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Disclosure of Product Revenue Reserves and Allowances [Line Items]
Revenues		$ 9,294	$ 7,323
YUTIQ [Member]
Disclosure of Product Revenue Reserves and Allowances [Line Items]
Revenues	[1]	4,611	3,029
DEXYCU [Member]
Disclosure of Product Revenue Reserves and Allowances [Line Items]
Revenues	[2]	4,399	3,773
Product [Member]
Disclosure of Product Revenue Reserves and Allowances [Line Items]
Revenues		$ 9,010	$ 6,802

[1] Included approximately $56 and $5 of revenue from YUTIQ product sales to Ocumension under a supply agreement for the three months ended March 31, 2022 and 2021, respectively.

[2] No revenue was recognized from DEXYCU product sales to Ocumension under a supply agreement for the three months ended March 31, 2022 and 2021.