Quarterly report pursuant to Section 13 or 15(d)

Share-Based Payments - Narrative (Details)

v3.22.4
Share-Based Payments - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Nov. 30, 2022
Nov. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total stock-based compensation cost $ 4,334 $ 3,709    
Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares) 617,050      
Percent of shares vested on time 43.00%      
Unrecognized compensation cost on non-vested awards $ 32,573      
Weighted average period of recognition of unrecognized compensation cost on non-vested awards 2 years 6 months      
Restricted stock awards unvested (in shares) 58,008      
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) 465,613      
Options granted (in shares) 75,000      
Share-based awards outstanding (in shares) 1,831,042      
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) 1,041,215      
Amended 2017 Plan | Performance-Based Restricted Share Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares) 1,312,562      
Retirement Eligible Employees        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Future income tax benefit from compensation expense recognized $ 551 $ 409    
Director Fee Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares deferred under stock based compensation plan (in shares) 45,738      
Value of annual stock based grant $ 140      
Total restricted stock awards granted to date (in shares) 305,911      
Restricted stock awards unvested (in shares) 132,682      
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) 150,000      
2019 Director Fee Plan | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares available for grants or awards (in shares)     300,000