Other Financial Statement Information - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Other Financial Statement Information [Abstract]
Prepaid contract costs	$ 5,117	$ 320
Prepaid insurance	452	1,193
Prepaid recruiting fees	258	253
Prepaid rent	219	219
Prepaid follow-on financing costs		275
Prepaid audit fees		123
Other	759	480
Total prepaid expenses and other current assets	$ 6,805	$ 2,863