Quarterly report pursuant to Section 13 or 15(d)

Debt And Derivatives - Schedule of Debt (Details)

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Debt And Derivatives - Schedule of Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Sep. 30, 2023
Debt Instrument [Line Items]    
Debt principal $ 1,319,620  
Total debt principal 1,319,620 $ 1,257,529
Less: Unamortized debt-issuance costs and discounts (6,934) (7,536)
Total debt 1,312,686 1,249,993
Less: Current portion of long-term debt (90,443) (86,844)
Long-term debt 1,222,243 1,163,149
Secured Debt | Term Loan A, due 2026    
Debt Instrument [Line Items]    
Debt principal 888,750 909,375
Secured Debt | Term Loan B, due 2028    
Debt Instrument [Line Items]    
Debt principal 344,052 344,934
Revolver | Revolving Credit Facility    
Debt Instrument [Line Items]    
Debt principal 80,000 0
Subsidiary loan agreements    
Debt Instrument [Line Items]    
Debt principal $ 6,818 $ 3,220