Quarterly report pursuant to Section 13 or 15(d)

Share-Based Payments - Narrative (Details)

v3.24.0.1
Share-Based Payments - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total stock-based compensation cost $ 4,651 $ 4,334  
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted (in shares) 458,320    
Percent of shares vested on time 40.00%    
Unrecognized compensation cost on non-vested awards $ 31,712    
Weighted average period of recognition of unrecognized compensation cost on non-vested awards 2 years 3 months 18 days    
Restricted stock awards unvested (in shares) 60,057    
Restricted Stock | Tranche One      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting increment 50.00%    
Restricted Stock | Tranche Two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting increment 25.00%    
Restricted Stock | Tranche Three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting increment 25.00%    
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period     3 years
Expiration period     5 years
Stock Options | Tranche One      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting increment 33.33%    
Stock Options | Tranche Two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting increment 33.33%    
Stock Options | Tranche Three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting increment 33.33%    
2017 Equity Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options granted (in shares)     75,000
Share price of options granted (in dollars per share)     $ 41.70
2017 Equity Incentive Plan | Stock Compensation Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Term of plan 10 years    
Amended 2017 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares reserved for future issuance under award plan (in shares) 3,450,000    
Shares issuance under award plan (in shares) 1,175,258    
Options granted (in shares) 75,000    
Share-based awards outstanding (in shares) 1,812,642    
Percentage of outstanding stock maximum 200.00%    
Amended 2017 Plan | Time-Based Restricted Share Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted (in shares) 1,233,583    
Amended 2017 Plan | Performance-Based Restricted Share Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted (in shares) 1,579,514    
Retirement Eligible Employees      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Future income tax benefit from compensation expense recognized $ 684 $ 551  
Director Fee Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares deferred under stock based compensation plan (in shares) 45,493    
Value of annual stock based grant $ 140    
Total restricted stock awards granted to date (in shares) 336,127    
Restricted stock awards unvested (in shares) 162,898    
2014 Director Fee Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Annual retainer fee paid to non-employee directors $ 90    
Annual retainer fee paid to non-employee Chairman of the Board $ 210    
2019 Director Fee Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares available for grants or awards (in shares) 300,000