v3.25.2
DEBT - Additional information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Sep. 30, 2024
Aug. 05, 2024
DEBT            
Available to borrow under the credit facility $ 338,000   $ 338,000      
Cash on hand 78,716   78,716   $ 65,963  
Current maturities of long-term debt 20,000   20,000      
Letters of credit outstanding, amount $ 7,200   $ 7,200      
Debt instrument, interest rate 6.03% 6.71% 5.99% 6.75%    
Weighted average interest rate over time 6.42%          
Revolving credit facility            
DEBT            
Line of credit facility, amount outstanding $ 500,000   $ 500,000      
Line of credit facility, commitment fee amount     $ 250,000      
Incremental Facility            
DEBT            
Periodic payment percentage on principal amount each twelve quarters     1.25%      
Periodic payment percentage on principal amount after twelve quarters     1.875%      
Minimum            
DEBT            
Facility fee     0.125%      
Minimum | Credit facility and incremental facility            
DEBT            
Basis spread on variable rate     0.25%      
Maximum            
DEBT            
Incremental term loan $ 250,000   $ 250,000      
Facility fee     0.25%      
Maximum | Loan payable            
DEBT            
Credit facility, aggregate principal amount           $ 375,000
Maximum | Credit facility and incremental facility            
DEBT            
Basis spread on variable rate     2.25%