v3.26.1
Leases - Supplemental Information (Details)
$ in Thousands
 9 Months Ended
Jun. 30, 2026
USD ($)
lease
Jun. 30, 2025
USD ($)
Sep. 30, 2025
USD ($)
lease
Assets:      
Operating lease assets $ 182,004   $ 178,861
Finance lease assets $ 2,347   $ 3,028
Finance lease, right-of-use asset, statement of financial position [Extensible List] Property and equipment, net   Property and equipment, net
Total leased assets $ 184,351   $ 181,889
Current      
Operating lease liabilities 14,814   16,967
Finance lease liabilities $ 1,104   $ 1,029
Finance lease, liability, current, statement of financial position [Extensible List] Long-term debt, current portion   Long-term debt, current portion
Non-current      
Operating lease liabilities $ 184,623   $ 174,838
Finance lease liabilities $ 1,968   $ 2,805
Finance lease, liability, noncurrent, statement of financial position [Extensible Enumeration] Long-term debt   Long-term debt
Total lease liabilities $ 202,509   $ 195,639
Number of campus leased | lease 1   1
Finance lease, accumulated amortization $ 3,300   $ 2,600
Weighted-average remaining lease term (in years):      
Operating leases 7 years 4 months 13 days   7 years 5 months 8 days
Finance lease 2 years 6 months 29 days   3 years 3 months 29 days
Weighted average discount rate:      
Operating leases 5.22%   5.09%
Finance lease 6.02%   6.02%
Cash paid for amounts included in the measurement of lease liabilities:      
Operating cash flows from operating leases $ 15,167 $ 16,758  
Financing cash flows from finance leases 762 692  
Non-cash activity related to lease liabilities:      
Lease assets obtained in exchange for new operating lease liabilities $ 22,799 $ 34,097