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Stock-Based Compensation - Additional Information (Details)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2020
Oct. 31, 2018
purchasePeriod
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2020
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation expense     $ 729 $ 575 $ 1,398 $ 1,046
ESPP            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation expense     200   $ 200  
Weighted-average period expected to be recognized (in years)         9 months 18 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 $ 21 $ 100 $ 21
Issuance of common stock through employee share purchase plan (in shares) | shares         72,105 0
Employee Stock Option            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation expense     $ 5,600   $ 5,600  
Weighted-average period expected to be recognized (in years)         2 years 6 months