v3.26.1
DEBT - Additional information (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2026
USD ($)
item
Mar. 31, 2025
Mar. 31, 2026
USD ($)
item
Mar. 31, 2025
Sep. 30, 2025
USD ($)
Aug. 05, 2024
USD ($)
Debt            
Letters of credit outstanding, amount $ 14,500   $ 14,500      
Available to borrow under the credit facility 440,000   440,000      
Cash on hand 92,252   92,252   $ 101,350  
Current maturities of long-term debt $ 20,000   $ 20,000   $ 20,000  
Weighted average interest rate during the period (as a percent) 5.06% 5.77% 5.28% 5.95%    
Weighted average interest rate over time 5.27%   5.44%      
Revolving credit facility            
Debt            
Borrowing capacity $ 250,000   $ 250,000      
Number of banks supporting the facility | item 7   7      
Line of credit facility, amount outstanding $ 500,000   $ 500,000      
Maximum            
Debt            
Amount currently available $ 250,000   $ 250,000      
Facility fee (as a percent)     2.25%      
Facility fee     0.25%      
Maximum | Loan payable            
Debt            
Credit facility, aggregate principal amount           $ 375,000
Minimum            
Debt            
Facility fee (as a percent)     0.25%      
Facility fee     0.125%