Supplemental Financial Information - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Disclosure Of Prepaid Expenses And Other Current Assets [Line Items]
Prepaid insurance	$ 1,666	$ 1,514
Prepaid raw materials	201	83
Research and development service agreements	172	2,591
Dues and subscriptions	121	96
Other	206	140
Total prepaid expenses and other current assets	$ 2,366	$ 4,424