Quarterly report pursuant to Section 13 or 15(d)

Debt - Interest Rate Contracts (Details)

v3.21.2
Debt - Interest Rate Contracts (Details) - Cash Flow Hedging - Designated as Hedging Instrument - Interest rate swap contracts - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Jun. 30, 2021
Sep. 30, 2020
Derivative [Line Items]    
Pay fixed swaps - notional amount $ 250,000 $ 312,500
Net unrealized loss $ (2,982) $ (7,792)
Weighted-average maturity period (years) 2 years 6 months 2 years 7 months 6 days
Weighted-average received rate (as a percent) 0.10% 0.15%
Weighted-average pay rate (as a percent) 1.34% 1.34%