Annual report pursuant to Section 13 and 15(d)

SHARE-BASED PAYMENTS - Narrative (Details)

v3.22.2.2
SHARE-BASED PAYMENTS - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2022
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Nov. 30, 2022
Nov. 30, 2021
Share-based compensation, aggregate disclosures [Abstract]            
Total stock-based compensation cost   $ 17,432 $ 15,581 $ 8,096    
Restricted Stock            
Share-based compensation, aggregate disclosures [Abstract]            
Percent of shares vested on time   42.00%        
Stock Options            
Share-based compensation, aggregate disclosures [Abstract]            
Expiration period (in years)   5 years        
Award vesting period   3 years        
Equity Incentive Plan 2017            
Share-based compensation, aggregate disclosures [Abstract]            
Term of plan (in years)   10 years        
Shares reserved for future issuance under award plan (in shares)           3,450,000
Shares issued (in shares)   215,618        
Grants in period (in shares)   75,000 75,000      
Share-based awards outstanding (in shares)   1,498,212        
Grants in period, exercise price (in dollars per share) $ 41.70          
Equity Incentive Plan 2017 | Time-Based Restricted Share Units            
Share-based compensation, aggregate disclosures [Abstract]            
Grants in period (in shares)   790,515        
Director Fee Plan, aggregate disclosures [Abstract]            
Grants in period (in shares)   790,515        
Equity Incentive Plan 2017 | Performance-Based Restricted Share Units            
Share-based compensation, aggregate disclosures [Abstract]            
Grants in period (in shares)   946,212        
Director Fee Plan, aggregate disclosures [Abstract]            
Grants in period (in shares)   946,212        
All Plans            
Share-based compensation, aggregate disclosures [Abstract]            
Total stock-based compensation cost   $ 17,432 $ 15,581 8,096    
Future income tax benefit from compensation expense recognized   3,821 $ 3,247 $ 1,665    
Unrecognized compensation cost on unvested awards   $ 21,753        
Weighted average period of recognition of unrecognized compensation cost on non-vested awards   2 years 2 months 12 days        
All Plans | Restricted Stock            
Share-based compensation, aggregate disclosures [Abstract]            
Grants in period (in shares)   671,817        
Director Fee Plan, aggregate disclosures [Abstract]            
Grants in period (in shares)   671,817        
Unvested shares (in shares)   1,459,233 1,083,365      
All Plans | Restricted Stock | Minimum            
Share-based compensation, aggregate disclosures [Abstract]            
Expiration period (in years)   3 years        
All Plans | Restricted Stock | Maximum            
Share-based compensation, aggregate disclosures [Abstract]            
Expiration period (in years)   5 years        
Director Fee Plans            
Director Fee Plan, aggregate disclosures [Abstract]            
Shares deferred under the director fee plan (in shares)   45,475        
Value of annual stock-based grant   $ 140        
Director Fee Plans | Restricted Stock            
Share-based compensation, aggregate disclosures [Abstract]            
Grants in period (in shares)   305,911        
Director Fee Plan, aggregate disclosures [Abstract]            
Grants in period (in shares)   305,911        
2019 Director Fee Plan            
Share-based compensation, aggregate disclosures [Abstract]            
Shares reserved for future issuance under award plan (in shares)   150,000        
Director Fee Plan, aggregate disclosures [Abstract]            
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 | Maximum | Subsequent Event            
Share-based compensation, aggregate disclosures [Abstract]            
Shares reserved for future issuance under award plan (in shares)         300,000  
2019 Director Fee Plan | Restricted Stock            
Share-based compensation, aggregate disclosures [Abstract]            
Grants in period (in shares)   132,682        
Director Fee Plan, aggregate disclosures [Abstract]            
Grants in period (in shares)   132,682        
Unvested shares (in shares)   58,008        
Amended 2017 Plan            
Share-based compensation, aggregate disclosures [Abstract]            
Percentage of outstanding stock, maximum   200.00%        
Share-based Payment Arrangement, Tranche One | Restricted Stock            
Share-based compensation, aggregate disclosures [Abstract]            
Vesting percentage   50.00%        
Share-based Payment Arrangement, Tranche One | Stock Options            
Share-based compensation, aggregate disclosures [Abstract]            
Vesting percentage   33.33%        
Share-based Payment Arrangement, Tranche Two | Restricted Stock            
Share-based compensation, aggregate disclosures [Abstract]            
Vesting percentage   25.00%        
Share-based Payment Arrangement, Tranche Two | Stock Options            
Share-based compensation, aggregate disclosures [Abstract]            
Vesting percentage   33.33%        
Share-based Payment Arrangement, Tranche Three | Restricted Stock            
Share-based compensation, aggregate disclosures [Abstract]            
Vesting percentage   25.00%        
Share-based Payment Arrangement, Tranche Three | Stock Options            
Share-based compensation, aggregate disclosures [Abstract]            
Vesting percentage   33.33%