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Common Stock and Stock Compensation - Additional Disclosures (Details)
$ in Thousands
1 Months Ended 2 Months Ended 5 Months Ended 12 Months Ended
May 03, 2022
USD ($)
Apr. 01, 2022
director
shares
Mar. 01, 2022
shares
Feb. 18, 2021
director
shares
Sep. 30, 2018
shares
Oct. 31, 2021
shares
Mar. 31, 2021
shares
Feb. 28, 2021
director
shares
Jan. 31, 2021
shares
Dec. 31, 2020
director
shares
Nov. 30, 2020
USD ($)
shares
May 31, 2020
shares
Dec. 31, 2019
director
shares
Dec. 31, 2018
shares
Dec. 31, 2017
shares
Nov. 30, 2021
shares
Sep. 30, 2022
USD ($)
shares
Sep. 30, 2022
USD ($)
shares
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2020
USD ($)
Oct. 31, 2022
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Common stock repurchased and retired | $                                   $ 2,040   $ 5,158  
Share-based compensation costs | $                                   $ 5,053 $ 3,946 $ (5,094)  
Non-employee directors                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Number of new non-employee directors | director       5                                  
Restricted stock                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Awards granted in period (in shares)                                   1,304,764      
Restricted stock | Non-Employee Director One                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Awards granted in period (in shares)   26,490           31,936   15,905     24,768                
Restricted stock | Non-Employee Director Two                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Awards granted in period (in shares)   26,490           31,936   15,905     24,768                
Restricted stock | Non-Employee Director Three                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Awards granted in period (in shares)   26,490           31,936   15,905     24,768                
Restricted stock | Non-Employee Director Four                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Awards granted in period (in shares)   26,490           31,936   15,905     24,768                
Restricted stock | Non-Employee Director Five                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Awards granted in period (in shares)   26,490               15,905     24,768                
Restricted stock | Non-Employee Director Six                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Awards granted in period (in shares)                   15,905     24,768                
Restricted stock | Non-Employee Director Seven                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Awards granted in period (in shares)                   15,905     24,768                
Restricted stock | Non-Employee Director Eight                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Awards granted in period (in shares)                   15,905     24,768                
Restricted stock | Non-Employee Director Nine                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Awards granted in period (in shares)                   15,905     24,768                
Restricted stock | Non-employee directors                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Number of new non-employee directors | director   5           4   9     9                
Awards granted in period (in shares)   132,450           127,744   143,145   12,346 222,912                
Awards vested in period (in shares)       79,525     63,620                            
Restricted stock | Employee                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Awards granted in period (in shares)           29,722   1,177,214               981,327   161,265 4,722    
Award vesting period           3 years         1 year       3 years     3 years 3 years 3 years  
Awards vested in period (in shares)                   295,723                      
Restricted stock | Employee | Vesting Tranche 1                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Vesting rights percentage                                     150.00%    
Restricted stock | Employee | Vesting Tranche 1 | Minimum                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Vesting rights percentage                                   0.00% 0.00%    
Restricted stock | Employee | Vesting Tranche 1 | Maximum                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Vesting rights percentage                                   150.00% 100.00%    
Restricted stock | Employee | Vesting Tranche 2                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Vesting rights percentage                                   150.00% 100.00%    
Restricted stock | Employee | Vesting Tranche 3                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Vesting rights percentage                                   100.00%      
Restricted Stock and Phantom Share-Based Awards                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Unamortized fair value of awards | $                                 $ 10,000 $ 10,000      
Weighted average period over which costs amortized                                   2 years      
2022 Plan | Restricted stock | Minimum                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Service period     1 year                                    
2022 Plan | Restricted stock | Maximum                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Service period     3 years                                    
2010 Plan | Restricted stock | Employee                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Common stock repurchased and retired (in shares)                     458,960                    
Awards granted in period (in shares)                 550,224         971,615 1,308,533       61,138    
Share-based compensation costs | $                     $ 2,900                    
2010 Plan | Restricted stock | Employee | Vesting Tranche 1                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Common stock repurchased and retired (in shares)         190,725                         81,896      
Common stock repurchased and retired | $                                   $ 800      
Awards granted in period (in shares)                     358,883                    
Common Stock Class A Non-Voting                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Stock repurchase program, amount authorized | $ $ 50,000                                        
Stock repurchase program, period (in years) 3 years                                        
Common stock repurchased and retired (in shares)                                 237,943        
Common stock repurchased and retired | $                                 $ 2,000        
Common Stock Class A Non-Voting | 2022 Plan                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Number of shares authorized (in shares)     400,000                                    
Common Stock Class A Non-Voting | 2022 Plan | Subsequent event                                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Number of shares authorized (in shares)                                         1,900,000