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Research Funding Agreement - Additional Information (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
Mar. 06, 2018
May 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Silverstein Foundation | Funding Agreement        
Research And Development Arrangement Contract To Perform For Others [Line Items]        
Upfront sum of funding amount $ 500      
Amounts received for qualifying expenses incurred recorded as reduction of research and development expense       $ 500
National Institute of Health        
Research And Development Arrangement Contract To Perform For Others [Line Items]        
Grant term   5 years    
Grant receivable   $ 1,500    
Qualifying expenses     $ 41,000  
Amounts received for qualifying expenses incurred recorded as other current assets     61,000  
National Institute of Health | Funding Agreement        
Research And Development Arrangement Contract To Perform For Others [Line Items]        
Qualifying expenses     $ 100