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Leases (Notes)
12 Months Ended
Sep. 30, 2022
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 $17,319 and $13,973, respectively, as of September 30, 2022 and 2021, and current finance lease liabilities were $2,928 and $1,033, respectively, as of September 30, 2022 and 2021. Current operating and finance lease liabilities were included in "Accounts payable and accrued expenses" in the Consolidated Balance Sheets as of September 30, 2022 and 2021. 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, 2022, are as follows:
Operating LeasesFinance LeasesTotal
2022$17,645 $3,004 $20,649 
202313,818 2,975 16,793 
202410,471 2,737 13,208 
20257,660 1,885 9,545 
20264,487 478 4,965 
Thereafter7,764 23 7,787 
Total undiscounted lease payments$61,845 $11,102 $72,947 
Less: imputed interest6,382 962 7,344 
Present value of lease liabilities$55,463 $10,140 $65,603 
The total future undiscounted cash flows related to lease agreements committed to but not yet commenced as of September 30, 2022, is $4,693.

Lease cost recognized in our Consolidated Statements of Comprehensive Income is summarized as follows:
Year Ended September 30,
20222021
Operating lease cost $16,000 $13,405 
Finance lease cost
Amortization of lease assets1,729 634 
Interest on lease liabilities269 119 
Finance lease cost1,998 753 
Short-term lease cost2,426 1,575 
Variable lease cost1,900 1,286 
Total lease cost$22,324 $17,019 

Other information about lease amounts recognized in our Consolidated Financial Statements is summarized as follows:
Year Ended September 30,
20222021
Operating cash flows used for operating leases$20,799 $15,011 
Operating cash flows used for finance leases269 119 
Right-of-use assets obtained in exchange for new operating lease liabilities31,422 24,606 
Right-of-use assets obtained in exchange for new finance lease liabilities7,950 2,962 
Year Ended September 30,
20222021
Weighted-average remaining lease term - operating leases4.8 years5.0 years
Weighted-average remaining lease term - finance leases3.9 years4.2 years
Weighted-average discount rate - operating leases4.0 %3.7 %
Weighted-average discount rate - finance leases4.7 %4.3 %

For a discussion of leases with certain related parties which are included above, see Note 13, “Related-Party Transactions.”
Rent expense was $18,426, $14,980 and $14,073 for the years ended September 30, 2022, 2021 and 2020, 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 $17,319 and $13,973, respectively, as of September 30, 2022 and 2021, and current finance lease liabilities were $2,928 and $1,033, respectively, as of September 30, 2022 and 2021. Current operating and finance lease liabilities were included in "Accounts payable and accrued expenses" in the Consolidated Balance Sheets as of September 30, 2022 and 2021. 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, 2022, are as follows:
Operating LeasesFinance LeasesTotal
2022$17,645 $3,004 $20,649 
202313,818 2,975 16,793 
202410,471 2,737 13,208 
20257,660 1,885 9,545 
20264,487 478 4,965 
Thereafter7,764 23 7,787 
Total undiscounted lease payments$61,845 $11,102 $72,947 
Less: imputed interest6,382 962 7,344 
Present value of lease liabilities$55,463 $10,140 $65,603 
The total future undiscounted cash flows related to lease agreements committed to but not yet commenced as of September 30, 2022, is $4,693.

Lease cost recognized in our Consolidated Statements of Comprehensive Income is summarized as follows:
Year Ended September 30,
20222021
Operating lease cost $16,000 $13,405 
Finance lease cost
Amortization of lease assets1,729 634 
Interest on lease liabilities269 119 
Finance lease cost1,998 753 
Short-term lease cost2,426 1,575 
Variable lease cost1,900 1,286 
Total lease cost$22,324 $17,019 

Other information about lease amounts recognized in our Consolidated Financial Statements is summarized as follows:
Year Ended September 30,
20222021
Operating cash flows used for operating leases$20,799 $15,011 
Operating cash flows used for finance leases269 119 
Right-of-use assets obtained in exchange for new operating lease liabilities31,422 24,606 
Right-of-use assets obtained in exchange for new finance lease liabilities7,950 2,962 
Year Ended September 30,
20222021
Weighted-average remaining lease term - operating leases4.8 years5.0 years
Weighted-average remaining lease term - finance leases3.9 years4.2 years
Weighted-average discount rate - operating leases4.0 %3.7 %
Weighted-average discount rate - finance leases4.7 %4.3 %

For a discussion of leases with certain related parties which are included above, see Note 13, “Related-Party Transactions.”
Rent expense was $18,426, $14,980 and $14,073 for the years ended September 30, 2022, 2021 and 2020, respectively.