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Stock-Based Compensation - Additional Information (Details)
$ in Thousands
1 Months Ended 3 Months Ended
Mar. 31, 2020
Oct. 31, 2018
purchasePeriod
Mar. 31, 2021
USD ($)
shares
Mar. 31, 2020
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense     $ 670 $ 471
ESPP        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation expense     $ 500  
Weighted-average period expected to be recognized (in years)     1 year 1 month 6 days  
Percentage of employee's compensation, maximum   15.00%    
Offering period (in months)   24 months    
Number of purchase periods | purchasePeriod   4    
Purchase period, term 6 months      
Percentage of lower of fair market value   85.00%    
Stock-based compensation expense     $ 100 $ 0
Common stock purchased (in shares) | shares     62,063  
Employee Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation expense     $ 5,900  
Weighted-average period expected to be recognized (in years)     2 years 7 months 6 days