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Fair Value Measurements (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Executive Savings Plan assets $ 706 $ 937  
Investments, Fair Value Disclosure 1,937    
Financial and Nonfinancial Liabilities, Fair Value Disclosure (585) (806)  
Business Combination, Contingent Consideration, Liability, Noncurrent (4,323) (4,181)  
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value $ (4,323) (4,181) $ 0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements   $ 4,074  
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Selling, general and administrative expenses Selling, general and administrative expenses  
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings $ (142) $ (107)  
Fair Value, Inputs, Level 1 [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Executive Savings Plan assets 706 937  
Investments, Fair Value Disclosure 1,937    
Financial and Nonfinancial Liabilities, Fair Value Disclosure (585) (806)  
Fair Value, Inputs, Level 3 [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Business Combination, Contingent Consideration, Liability, Noncurrent $ (4,323) $ (4,181)