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Stockholders' Equity (ESPP) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock Issued During Period, Shares, Employee Stock Purchase Plans   14,734     15,706 46,622 59,020
Employee Stock Purchase Plan Weighted Average Purchase Price Of Shares Purchased (in USD per share)   $ 26.32     $ 18.96 $ 26.32 $ 15.60
ESPP              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Risk-free interest rate   0.10% 0.09% 0.09%      
Share-based compensation expense   $ 117     $ 95 $ 458 $ 339
Dividend yield           0.01%  
Expected volatility           48.14%  
Expected holding period (years)   9 months 6 months 3 months      
ESPP | Forecast              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Risk-free interest rate 0.10%            
Expected holding period (years) 1 year