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Leases - Additional Information (Details)
 1 Months Ended 3 Months Ended 12 Months Ended
Oct. 31, 2021
Apr. 30, 2022
Dec. 31, 2021
USD ($)
ft²
Nov. 30, 2021
Mar. 31, 2021
ft²
Sep. 30, 2020
USD ($)
ft²
Mar. 31, 2022
USD ($)
Mar. 31, 2021
USD ($)
ft²
Dec. 31, 2021
USD ($)
ft²
Dec. 31, 2018
ft²
Lessee Lease Description [Line Items]                    
Operating leases cancelable and non-cancellable expiration dates             2032      
Operating leases Noncancelable expiration dates             2026      
Operating lease cost             $ 1,000,000.0 $ 361,000    
Variable lease costs             117,000 105,000    
Short-term lease costs             31,000 29,000    
Cash paid for operating leases             $ 273,000 $ 268,000    
Operating lease, weighted-average remaining lease term     9 years 10 months 9 days       9 years 10 months 2 days   9 years 10 months 9 days  
Operating lease, weighted-average discount rate     6.90%       7.00%   6.90%  
Operating lease, aggregate monthly payments to lessor             $ 51,611,000      
Letter of credit provided to lessor     $ 408,000       408,000   $ 408,000  
Other Income (Expense), Net                    
Lessee Lease Description [Line Items]                    
Gain on lease remeasurement             $ 539,000      
2020 Lease                    
Lessee Lease Description [Line Items]                    
Office space leases | ft²           59,407        
Lease commencement month and year           2021-08        
Operating lease initial term           10 years 9 months        
Operating lease, aggregate monthly payments to lessor           $ 51,600,000        
Tenant improvement allowance           $ 16,800,000        
Term for cancellation of lease           84 months        
Notice period for cancellation of lease           12 months        
Operating lease cancellation payment           $ 2,500,000        
2020 Lease | Letter of Credit                    
Lessee Lease Description [Line Items]                    
Letter of credit provided to lessor           $ 408,000        
Line of credit facility, expiration date           Oct. 31, 2031        
2018 Lease                    
Lessee Lease Description [Line Items]                    
Lease expiration date May 31, 2024     Apr. 30, 2022            
Office space leases | ft²                   16,153
2018 Lease | Subsequent Event                    
Lessee Lease Description [Line Items]                    
Lease expiration date   May 31, 2022                
First Amendment to 2020 Lease                    
Lessee Lease Description [Line Items]                    
Office space leases | ft²         18,421     18,421    
Lease commencement month and year         2022-02          
First Amendment to 2020 Lease | Subsequent Event                    
Lessee Lease Description [Line Items]                    
Lease commencement month and year   2022-05                
2021 Lease                    
Lessee Lease Description [Line Items]                    
Office space leases | ft²     29,542           29,542  
Lease commencement month and year     2022-07              
Operating lease initial term     124 months           124 months  
Operating lease option to extend             5 years      
Operating lease existence of option to extend [true false]                 true  
Operating lease, aggregate monthly payments to lessor     $ 34,400,000           $ 34,400,000  
Tenant improvement allowance     8,200,000              
Prepaid rent             $ 5,100,000      
2021 Lease | Other Assets                    
Lessee Lease Description [Line Items]                    
Security deposit paid     $ 874,000           $ 874,000  
California | 2018 Lease                    
Lessee Lease Description [Line Items]                    
Office space leases | ft²                   11,000