XML 61 R49.htm IDEA: XBRL DOCUMENT v3.22.1
Stock-Based Compensation - Additional Information (Details)
$ in Thousands
1 Months Ended 3 Months Ended
Oct. 31, 2018
purchasePeriod
Mar. 31, 2022
USD ($)
shares
Mar. 31, 2021
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense   $ 597 $ 670
ESPP      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense   $ 46  
Weighted-average period expected to be recognized (in years)   4 months 24 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 $ 100
Issuance of common stock through employee share purchase plan (in shares) | shares   201,015  
Employee Stock Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense   $ 5,200  
Weighted-average period expected to be recognized (in years)   2 years 9 months 18 days  
Unvested restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense   $ 300  
Weighted-average period expected to be recognized (in years)   3 years