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Leases | 12 Months Ended
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Sep. 30, 2025
Leases |
Leases | 12. Leases We record our leases in accordance with ASC 842, Leases. We determine at lease inception whether an arrangement that provides control over the use of an asset is a lease. We recognize at lease commencement a right-of-use (ROU) asset and lease liability based on the present value of the future lease payments over the lease term (including anticipated renewals). We have elected not to recognize a ROU asset and lease liability for leases with terms of 12 months or less. Certain of our leases include options to extend the term of the lease for up to 20 years. When it is reasonably certain that we will exercise the option, Management includes the impact of the option in the lease term for purposes of determining total future lease payments. As most of our lease agreements do not explicitly state the discount rate implicit in the lease, Management uses our incremental borrowing rate on the commencement date to calculate the present value of future payments based on the tenor of each arrangement. Our leases for real estate commonly include escalating payments. We include these variable lease payments in the calculation of our ROU asset and lease liability. In addition to the present value of the future lease payments, the calculation of the ROU asset also includes any deferred rent, lease pre-payments and initial direct costs of obtaining the lease. In addition to the base rent, real estate leases typically contain provisions for common-area maintenance and other similar services, which are considered non-lease components for accounting purposes. Non-lease components are excluded from our ROU assets and lease liabilities and expensed as incurred. Our leases are for office space, manufacturing facilities, and machinery and equipment. The components of lease costs are shown below: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended |  | Year Ended
​ | ​ | September 30, | ​ | September 30,
(Dollars in thousands) |  | 2025 |  | 2024
Finance lease cost: |  | ​ |  | ​ | ​ | ​
Amortization | ​ | $ | 1,489 | ​ | ​ | 1,510
Interest on lease liabilities | ​ |  | 802 | ​ | ​ | 861
Operating lease cost | ​ |  | 7,810 | ​ | ​ | 6,582
Total lease cost | ​ | $ | 10,101 | ​ | ​ | 8,953
​ Additional information related to leases is shown below: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended |  | Year Ended |
​ | ​ | September 30, | ​ | September 30, | ​
(Dollars in thousands) | ​ | 2025 | ​ | 2024 | ​
Cash paid for amounts included in the measurement of lease liabilities: | ​ | ​ | ​ |  | ​ |  |
Operating cash flows from operating leases | ​ | $ | 7,318 | ​ | ​ | 6,349 |
Operating cash flows from finance leases | ​ | ​ | 802 | ​ | ​ | 861 |
Financing cash flows from finance leases | ​ | ​ | 1,430 | ​ | ​ | 1,351 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Right-of-use assets obtained in exchange for operating lease liabilities | ​ | $ | 16,426 | ​ | ​ | 3,028 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted-average remaining lease term: | ​ | ​ | ​ | ​ |  | ​ |
Operating leases | ​ | ​ | 9.3 | yrs |  | 10.5 | yrs
Finance leases | ​ | ​ | 9.7 | yrs |  | 10.4 | yrs
Weighted-average discount rate: | ​ | ​ | ​ | ​ |  | ​ |
Operating leases | ​ | ​ | 4.8 | % |  | 4.6 | %
Finance leases | ​ | ​ | 4.7 | % |  | 4.7 | %
​ The table below is a reconciliation of future undiscounted cash flows to the operating and finance lease liabilities, and the related ROU assets, presented on our Consolidated Balance Sheet on September 30, 2025: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(Dollars in thousands) | ​ | Operating | ​ | Finance
Years Ending September 30: |  | Leases |  | Leases
2026 | ​ | $ | 7,951 | ​ | ​ | 2,297
2027 | ​ |  | 7,709 | ​ | ​ | 2,357
2028 | ​ |  | 7,574 | ​ | ​ | 2,417
2029 | ​ | ​ | 6,134 | ​ | ​ | 2,478
2030 and thereafter | ​ |  | 33,540 | ​ | ​ | 11,575
Total minimum lease payments | ​ | ​ | 62,908 | ​ | ​ | 21,124
Less: amounts representing interest | ​ |  | 12,611 | ​ | ​ | 4,571
Present value of net minimum lease payments | ​ | $ | 50,297 | ​ | ​ | 16,553
Less: current portion of lease obligations | ​ |  | 5,894 | ​ | ​ | 1,554
Non-current portion of lease obligations | ​ | ​ | 44,403 | ​ | ​ | 14,999
​ | ​ | ​ | ​ | ​ | ​ | ​
ROU assets | ​ | $ | 47,707 | ​ | ​ | 12,194
​ The table below is a reconciliation of future undiscounted cash flows to the operating and finance lease liabilities, and the related ROU assets, presented on our Consolidated Balance Sheet on September 30, 2024: ​
​ | ​ | ​ | ​ | ​ | ​
(Dollars in thousands) |  | Operating |  | Finance
Years Ending September 30: | ​ | Leases | ​ | Leases
2025 | ​ | $ | 6,394 |  | 2,233
2026 | ​ |  | 5,118 |  | 2,297
2027 | ​ |  | 4,813 |  | 2,357
2028 | ​ |  | 4,517 |  | 2,417
2029 and thereafter | ​ |  | 29,765 |  | 14,053
Total minimum lease payments | ​ | ​ | 50,607 |  | 23,357
Less: amounts representing interest | ​ |  | 11,026 |  | 5,373
Present value of net minimum lease payments | ​ | $ | 39,581 |  | 17,984
Less: current portion of lease obligations | ​ |  | 4,771 |  | 1,431
Non-current portion of lease obligations | ​ |  | 34,810 |  | 16,553
​ | ​ | ​ | ​ | ​ | ​
ROU assets | ​ | $ | 37,476 | ​ | 13,683
​ We include operating and finance lease liabilities in the Consolidated Balance Sheet in accrued other expenses (current portion) and other liabilities (long-term portion). We include operating lease ROU assets as a caption on the Consolidated Balance Sheet and include finance lease ROU assets in Property, plant and equipment on the Consolidated Balance Sheet.

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