XML 51 R40.htm IDEA: XBRL DOCUMENT v3.22.0.1
Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Sep. 30, 2021
Restricted Stock Units (RSUs)      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Vesting period 3 years    
Unvested restricted stock outstanding (in shares) 235,502   199,919
Compensation expense $ 0.9 $ 0.8  
Restricted Stock Units (RSUs) | Time Based Restricted Stock Unit      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Vesting period 3 years    
Restricted Stock Units (RSUs) | Performance Based Restricted Stock Unit      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Vesting period 3 years    
Restricted Stock      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Compensation expense $ 0.1 $ 0.1  
Restricted Stock | Non Employee Director Equity Incentive Plan      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Shares issued under the plan (in shares) 2,400    
Restricted Stock | Non Employee Director Equity Incentive Plan | Immediate Vesting      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Vesting, percentage 50.00%    
Restricted Stock | Non Employee Director Equity Incentive Plan | Anniversary of Grant Date      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Vesting, percentage 50.00%