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EQUITY-BASED INCENTIVE AWARDS - Authorized and Approved Restricted Stock Units/Restricted Stock Awards (Details) - USD ($)
1 Months Ended 12 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2019
Sep. 30, 2022
Sep. 30, 2021
Restricted Stock Units          
EQUITY-BASED INCENTIVE AWARD          
Non-vested awards outstanding at the end of the period (in shares)       18,519 35,220
Vested during the period (in shares)       16,701  
Direct cost to the recipients of the restricted stock units       $ 0  
Compensation expense       2,300,000 $ 2,300,000
Tax benefit related to compensation expense       600,000 600,000
Total intrinsic value of equity-based compensation awards vested       $ 3,500,000 $ 2,100,000
Period over which unamortized compensation expense is expected to be amortized       12 months  
Total unamortized compensation expense       $ 1,400,000  
Restricted Stock Units Awarded October 2019          
EQUITY-BASED INCENTIVE AWARD          
Original number of awards issued     14,550    
Service period     36 months    
Estimated fair value of award at grant date     $ 1,007,000    
Non-vested awards outstanding at the end of the period (in shares)       4,851  
Fair value of non-vested awards at the end of the period       $ 1,019,000  
Vested during the period (in shares)       9,699  
Restricted Stock Units Awarded October 2019 | Vest in October 2022          
EQUITY-BASED INCENTIVE AWARD          
Units scheduled to vest       4,851  
Restricted Stock Units Awarded October 2020          
EQUITY-BASED INCENTIVE AWARD          
Original number of awards issued   20,500      
Service period   36 months      
Estimated fair value of award at grant date   $ 1,415,000      
Non-vested awards outstanding at the end of the period (in shares)       13,668  
Fair value of non-vested awards at the end of the period       $ 2,870,000  
Vested during the period (in shares)       6,832  
Restricted Stock Units Awarded October 2020 | Vest in October 2022          
EQUITY-BASED INCENTIVE AWARD          
Units scheduled to vest       6,834  
Restricted Stock Units Awarded October 2020 | Vest in October 2023          
EQUITY-BASED INCENTIVE AWARD          
Units scheduled to vest       6,834  
Restricted Stock Awards          
EQUITY-BASED INCENTIVE AWARD          
Original number of awards issued 15,100     15,100  
Service period 36 months        
Estimated fair value of award at grant date $ 2,088,934        
Non-vested awards outstanding at the end of the period (in shares)       15,100  
Fair value of non-vested awards at the end of the period       $ 3,171,000  
Direct cost to the recipients of the restricted stock units       0  
Compensation expense       $ 700,000  
Period over which unamortized compensation expense is expected to be amortized       24 months  
Total unamortized compensation expense       $ 1,400,000  
Restricted Stock Awards | Vest in October 2022          
EQUITY-BASED INCENTIVE AWARD          
Units scheduled to vest       15,100  
Restricted Stock Awards | Vest in October 2023          
EQUITY-BASED INCENTIVE AWARD          
Units scheduled to vest       15,100  
Restricted Stock Awards | Vest in October 2024          
EQUITY-BASED INCENTIVE AWARD          
Units scheduled to vest       15,100