XML 51 R37.htm IDEA: XBRL DOCUMENT v3.22.0.1
Commitments and Contingencies - Additional Information (Detail)
$ in Millions
1 Months Ended 12 Months Ended
Jul. 31, 2018
ft²
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]        
Lease extended maturity date May 31, 2023      
Lease, option to extend false      
Operating lease expense | $   $ 1.0 $ 1.0 $ 1.0
Operating lease, weighted average remaining lease term   1 year 4 months 24 days 2 years 4 months 24 days  
Operating lease, weighted average discount rate   9.60% 9.60%  
Maximum [Member]        
Debt Instrument [Line Items]        
Lease space 24,494      
Minimum [Member]        
Debt Instrument [Line Items]        
Lease space 20,508