Property and Equipment - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 19,613	$ 18,722
Less: accumulated depreciation and amortization	(14,985)	(12,422)
Property and equipment, net	4,628	6,300
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, gross	904	875
Machinery and Equipment
Property Plant And Equipment [Line Items]
Property and equipment, gross	572	572
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,258	1,297
Construction in Progress
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 239	$ 32