Supplemental Financial Information - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Disclosure Of Prepaid Expenses And Other Current Assets [Line Items]
Research and development service agreements	$ 650	$ 2,591
Prepaid raw materials	141	83
Dues and subscriptions	125	96
Prepaid insurance	21	1,514
Other	205	140
Total prepaid expenses and other current assets	$ 1,142	$ 4,424