XML 38 R28.htm IDEA: XBRL DOCUMENT v3.22.1
Financial Statement Details - Schedule of Accrued Liabilities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Accrued payroll and benefits $ 842 $ 1,695
Accrued clinical trial and contract expenses 2,711 3,380
Accrued professional services and expenses 217 180
Other accrued expenses 382 547
Total accrued expenses $ 4,152 $ 5,802