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Leases (Notes)
12 Months Ended
Sep. 30, 2024
Leases [Abstract]  
Lessee, Finance Leases
9.  LEASES

We enter into various contractual arrangements for the right to use facilities, vehicles and equipment. The lease term generally ranges from two to ten years for facilities and three to five years for vehicles and equipment. Our lease terms may include the exercise of renewal or termination options when it is reasonably certain these options will be exercised. Our lease agreements do not contain any material residual value guarantees or restrictive covenants.

Current operating lease liabilities were $21,981 and $19,496, respectively, as of September 30, 2024 and 2023, and current finance lease liabilities were $4,563 and $4,301, respectively, as of September 30, 2024 and 2023. Current operating and finance lease
liabilities were included in "Accounts payable and accrued expenses" in the Consolidated Balance Sheets as of September 30, 2024 and 2023. Non-current finance lease liabilities and finance lease right-of-use assets were included in the "Other non-current liabilities" and "Other non-current assets", respectively, in the Consolidated Balance Sheets.

The maturities of our lease liabilities as of September 30, 2024, are as follows:
Operating LeasesFinance LeasesTotal
2025$22,487 $4,701 $27,188 
202618,512 3,916 22,428 
202713,526 2,148 15,674 
20287,848 379 8,227 
20293,591 46 3,637 
Thereafter3,467 — 3,467 
Total undiscounted lease payments$69,431 $11,190 $80,621 
Less: imputed interest7,005 896 7,901 
Present value of lease liabilities$62,426 $10,294 $72,720 
The total future undiscounted cash flows related to lease agreements committed to but not yet commenced as of September 30, 2024, is $8,542.

Lease cost recognized in our Consolidated Statements of Comprehensive Income is summarized as follows:
Year Ended September 30,
202420232022
Operating lease cost $21,933 $18,501 $16,000 
Finance lease cost
Amortization of lease assets4,370 3,603 1,729 
Interest on lease liabilities553 746 269 
Finance lease cost4,923 4,349 1,998 
Short-term lease cost1,558 1,883 2,426 
Variable lease cost4,518 2,805 1,900 
Total lease cost$32,932 $27,538 $22,324 

Other information about lease amounts recognized in our Consolidated Financial Statements is summarized as follows:
Year Ended September 30,
202420232022
Operating cash flows used for operating leases$24,381 $22,022 $20,799 
Operating cash flows used for finance leases553 746 269 
Right-of-use assets obtained in exchange for new operating lease liabilities21,795 27,491 31,422 
Right-of-use assets obtained in exchange for new finance lease liabilities1,678 5,973 7,950 
Year Ended September 30,
20242023
Weighted-average remaining lease term - operating leases3.8 years4.5 years
Weighted-average remaining lease term - finance leases2.7 years3.4 years
Weighted-average discount rate - operating leases5.5 %5.1 %
Weighted-average discount rate - finance leases6.2 %6.0 %

For a discussion of leases with certain related parties which are included above, see Note 13, “Related-Party Transactions.”
Rent expense was $23,491, $20,384 and $18,426 for the years ended September 30, 2024, 2023 and 2022, respectively.
Lessee, Operating Leases
9.  LEASES

We enter into various contractual arrangements for the right to use facilities, vehicles and equipment. The lease term generally ranges from two to ten years for facilities and three to five years for vehicles and equipment. Our lease terms may include the exercise of renewal or termination options when it is reasonably certain these options will be exercised. Our lease agreements do not contain any material residual value guarantees or restrictive covenants.

Current operating lease liabilities were $21,981 and $19,496, respectively, as of September 30, 2024 and 2023, and current finance lease liabilities were $4,563 and $4,301, respectively, as of September 30, 2024 and 2023. Current operating and finance lease
liabilities were included in "Accounts payable and accrued expenses" in the Consolidated Balance Sheets as of September 30, 2024 and 2023. Non-current finance lease liabilities and finance lease right-of-use assets were included in the "Other non-current liabilities" and "Other non-current assets", respectively, in the Consolidated Balance Sheets.

The maturities of our lease liabilities as of September 30, 2024, are as follows:
Operating LeasesFinance LeasesTotal
2025$22,487 $4,701 $27,188 
202618,512 3,916 22,428 
202713,526 2,148 15,674 
20287,848 379 8,227 
20293,591 46 3,637 
Thereafter3,467 — 3,467 
Total undiscounted lease payments$69,431 $11,190 $80,621 
Less: imputed interest7,005 896 7,901 
Present value of lease liabilities$62,426 $10,294 $72,720 
The total future undiscounted cash flows related to lease agreements committed to but not yet commenced as of September 30, 2024, is $8,542.

Lease cost recognized in our Consolidated Statements of Comprehensive Income is summarized as follows:
Year Ended September 30,
202420232022
Operating lease cost $21,933 $18,501 $16,000 
Finance lease cost
Amortization of lease assets4,370 3,603 1,729 
Interest on lease liabilities553 746 269 
Finance lease cost4,923 4,349 1,998 
Short-term lease cost1,558 1,883 2,426 
Variable lease cost4,518 2,805 1,900 
Total lease cost$32,932 $27,538 $22,324 

Other information about lease amounts recognized in our Consolidated Financial Statements is summarized as follows:
Year Ended September 30,
202420232022
Operating cash flows used for operating leases$24,381 $22,022 $20,799 
Operating cash flows used for finance leases553 746 269 
Right-of-use assets obtained in exchange for new operating lease liabilities21,795 27,491 31,422 
Right-of-use assets obtained in exchange for new finance lease liabilities1,678 5,973 7,950 
Year Ended September 30,
20242023
Weighted-average remaining lease term - operating leases3.8 years4.5 years
Weighted-average remaining lease term - finance leases2.7 years3.4 years
Weighted-average discount rate - operating leases5.5 %5.1 %
Weighted-average discount rate - finance leases6.2 %6.0 %

For a discussion of leases with certain related parties which are included above, see Note 13, “Related-Party Transactions.”
Rent expense was $23,491, $20,384 and $18,426 for the years ended September 30, 2024, 2023 and 2022, respectively.