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INDEBTEDNESS (Details) - USD ($)
6 Months Ended
Mar. 31, 2023
Sep. 30, 2022
Apr. 01, 2022
Debt Instrument [Line Items]      
Debt outstanding $ 0 $ 0 $ 0
Financial Standby Letter of Credit      
Debt Instrument [Line Items]      
Letters of credit outstanding 173,000   $ 181,000
Revolving Credit Facility      
Debt Instrument [Line Items]      
Maximum borrowing capacity $ 125,000,000    
Interest rate (in percent) 5.90%   1.40%
Revolving Credit Facility | Minimum | LIBOR      
Debt Instrument [Line Items]      
Margin percentage 1.00%    
Revolving Credit Facility | Maximum | LIBOR      
Debt Instrument [Line Items]      
Margin percentage 1.75%    
Unsecured Revolving Credit Facilities At Foreign Subsidiaries      
Debt Instrument [Line Items]      
Unsecured revolving credit facilities $ 0   $ 0
Revolvers Borrowing Capacity Standard | Revolving Credit Facility      
Debt Instrument [Line Items]      
Maximum borrowing capacity 75,000,000    
Accordion feature $ 50,000,000