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Leases (Tables) | 12 Months Ended
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Sep. 30, 2025
Leases [Abstract] |
Components of Operating Lease Costs | The following table summarizes the components of the Company’s total operating lease costs (in thousands):
| Year Ended September 30
| 2025 |  | 2024
Operating Lease Expense | $ | 12,723 |  |  | $ | 11,827 |
Variable Lease Expense(1) | 581 |  |  | 601 |
Short-Term Lease Expense(2) | 719 |  |  | 299 |
Total Lease Expense | $ | 14,023 |  |  | $ | 12,727 |
Lease Costs Recorded to Property, Plant and Equipment(3) | $ | 20,878 |  |  | $ | 20,143 |
(1)Variable lease payments that are not dependent on an index or rate are not included in the lease liability. (2)Short-term lease costs exclude expenses related to leases with a lease term of one month or less. (3)Lease costs relating to drilling rig leases that are capitalized as part of exploration and production properties under full cost pool accounting as well as certain equipment leases used on construction projects.
Balance Sheet Information Related to Operating Leases | The following amounts related to operating leases were recorded on the Company’s Consolidated Balance Sheet (in thousands):
| Year Ended September 30
| 2025 |  | 2024
Assets: |  |  |
Deferred Charges | $ | 41,317 |  |  | $ | 44,206 |
Liabilities: |  |  |
Other Accruals and Current Liabilities | $ | 11,479 |  |  | $ | 11,518 |
Other Liabilities | $ | 29,683 |  |  | $ | 32,616 |
Schedule of Operating Lease Liability Maturities | The following schedule of operating lease liability maturities summarizes the undiscounted lease payments owed by the Company to lessors pursuant to contractual agreements in effect as of September 30, 2025 (in thousands):
| At September 30, 2025
2026 | $ | 11,773 |
2027 | 10,779 |
2028 | 9,282 |
2029 | 5,774 |
2030 | 3,306 |
Thereafter | 6,408 |
Total Lease Payments | 47,322 |
Less: Interest | (6,160) |
Total Lease Liability | $ | 41,162 |

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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