v3.26.1
LONG-TERM DEBT - Schedule of Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Sep. 30, 2025
Debt Instrument [Line Items]    
Outstanding Balance $ 1,274,786 $ 1,423,811
less: Current portion (8,011) (8,033)
Long-term debt 1,266,775 1,415,778
Original Issuer Premium/(Discount) (145) (340)
Capitalized Fees & Expenses (7,006) (11,162)
Balance Sheet 1,267,635 1,412,309
less: Current portion (8,011) (8,033)
Long-term debt 1,259,624 1,404,276
Senior notes due 2028    
Debt Instrument [Line Items]    
Outstanding Balance 974,775 974,775
Original Issuer Premium/(Discount) 85 121
Capitalized Fees & Expenses (3,366) (4,880)
Balance Sheet $ 971,494 $ 970,016
Coupon Interest Rate 5.75% 5.75%
Term loan B due 2029    
Debt Instrument [Line Items]    
Outstanding Balance $ 285,000 $ 449,000
Original Issuer Premium/(Discount) (230) (461)
Capitalized Fees & Expenses (2,086) (4,169)
Balance Sheet 282,684 444,370
Revolver due 2028    
Debt Instrument [Line Items]    
Outstanding Balance 15,000 0
Original Issuer Premium/(Discount) 0 0
Capitalized Fees & Expenses (1,554) (2,113)
Balance Sheet 13,446 (2,113)
Other debt    
Debt Instrument [Line Items]    
Outstanding Balance 11 36
Original Issuer Premium/(Discount) 0 0
Capitalized Fees & Expenses 0 0
Balance Sheet $ 11 $ 36