Revenue - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disclosure of Product Revenue Reserves and Allowances [Line Items]
Revenues		$ 11,565	$ 9,013	$ 20,859	$ 16,336
YUTIQ [Member]
Disclosure of Product Revenue Reserves and Allowances [Line Items]
Revenues	[1]	7,421	4,166	12,032	7,196
DEXYCU [Member]
Disclosure of Product Revenue Reserves and Allowances [Line Items]
Revenues	[2]	3,897	4,572	8,296	8,344
Product [Member]
Disclosure of Product Revenue Reserves and Allowances [Line Items]
Revenues		$ 11,318	$ 8,738	$ 20,328	$ 15,540

[1] Included approximately $11 and $67 of revenue from YUTIQ product sales to Ocumension under a supply agreement for the three and six months ended June 30, 2022, respectively, and approximately $14 and $19 of revenue from YUTIQ product sales to Ocumension under a supply agreement for the three and six months ended June 30, 2021, respectively.

[2] No revenue was recognized from DEXYCU product sales to Ocumension under a supply agreement for the three and six months ended June 30, 2022, and no revenue was recognized from DEXYCU product sales to Ocumension for the three and six months ended June 30, 2021.