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Stock-based Compensation - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Jun. 30, 2019
Mar. 31, 2022
Mar. 31, 2021
Aug. 31, 2021
Jul. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized (in shares)         13,650,000
Stock-based compensation expense   $ 1.0 $ 0.9    
Share-based compensation, nonvested awards, compensation cost not yet recognized   $ 5.0      
Period for recognition of compensation on unvested stock option (in years)   1 year 9 months 18 days      
ESPP          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized (in shares)       1,250,000  
ESPP | Employee Stock Purchase Plan 2019          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Discount from market price, purchase date (as a percent) 15.00%        
Purchase period (in month) 6 months        
ESPP purchase price of common stock, percent of closing price (as a percent) 85.00%        
Shares issued (in shares)   468,384