Quarterly report pursuant to Section 13 or 15(d)

Debt - Schedule of Debt (Details)

v3.22.0.1
Debt - Schedule of Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Sep. 30, 2021
Debt Instrument [Line Items]    
Total debt principal $ 1,607,064 $ 1,523,531
Less: Unamortized debt-issuance costs and discounts (13,272) (13,839)
Total debt 1,593,792 1,509,692
Less: Current portion of long-term debt (78,703) (80,555)
Long-term debt 1,515,089 1,429,137
Secured Debt | Term Loan A, due 2026    
Debt Instrument [Line Items]    
Total debt principal 1,072,500 1,086,250
Secured Debt | Term Loan B, due 2028    
Debt Instrument [Line Items]    
Total debt principal 398,000 399,000
Subsidiary Loans    
Debt Instrument [Line Items]    
Total debt principal 36,564 38,281
Line of Credit | Revolver    
Debt Instrument [Line Items]    
Total debt principal 100,000 $ 0
Total debt $ 100,000