Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Payables And Accruals [Abstract]
Personnel costs	$ 7,321	$ 5,686
Clinical trial costs	753	0
Professional fees	712	647
Sales chargebacks, rebates and other revenue reserves	2,974	1,109
Commissions due to commercialization partner for DEXYCU	1,518	254
Other	1,144	749
Accrued expenses	$ 14,422	$ 8,445