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Summary of Significant Accounting Policies - Additional Information (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
Segment
Jun. 30, 2021
USD ($)
Jan. 01, 2022
USD ($)
Significant Accounting Policies [Line Items]            
Number of operating segment | Segment       1    
Cash and cash equivalent maturity period       90 days    
Restricted cash $ 266,000 $ 424,000   $ 266,000    
Long-lived assets, impairment charge   $ 553,000        
Expected dividend assumed       $ 0    
Grant revenue     $ 605,000   $ 796,000  
Percentage income taxes benefits upon ultimate settlement       50.00%    
Lease right of use asset 1,164,000     $ 1,164,000    
Lease liability $ 2,165,000     $ 2,165,000    
ASU 2020-05            
Significant Accounting Policies [Line Items]            
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true     true    
Change in Accounting Principle, Accounting Standards Update, Adoption Date Jan. 01, 2022     Jan. 01, 2022    
ASU 2016-02 (Topic 842)            
Significant Accounting Policies [Line Items]            
Lease right of use asset           $ 1,264,000
Lease liability           $ 2,368,000
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true     true    
Change in Accounting Principle, Accounting Standards Update, Adoption Date Jan. 01, 2022     Jan. 01, 2022    
ASU 2021-10            
Significant Accounting Policies [Line Items]            
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true     true    
Change in Accounting Principle, Accounting Standards Update, Adoption Date Jan. 01, 2022     Jan. 01, 2022    
ASU 2020-06            
Significant Accounting Policies [Line Items]            
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] true     true    
Change in Accounting Principle, Accounting Standards Update, Early Adoption [true false] true     true    
Change in Accounting Principle, Accounting Standards Update, Adoption Date Jan. 01, 2022     Jan. 01, 2022    
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] true     true    
Government            
Significant Accounting Policies [Line Items]            
Grant revenue $ 0   $ 605,000 $ 0 $ 796,000  
Minimum            
Significant Accounting Policies [Line Items]            
Marketable debt securities maturities duration       90 days