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Detail of Selected Balance Sheet Accounts | 12 Months Ended
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Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Detail of Selected Balance Sheet Accounts | Detail of Selected Balance Sheet Accounts Inventories The components of inventories are summarized below (in thousands):
| September 30,
| 2025 |  | 2024
Raw materials, parts and sub-assemblies | $ | 90,743 |  |  | $ | 92,314 |
Work-in-progress | 2,222 |  |  | 920 |
Provision for excess and obsolete inventories | (8,246) |  |  | (7,361) |
Total inventories | $ | 84,719 |  |  | $ | 85,873 |
Property, Plant and Equipment Property, plant and equipment are summarized below (in thousands):
| September 30, |  | Range of
| 2025 |  | 2024 |  | Asset Lives
Land | $ | 24,436 |  |  | $ | 24,110 |  |  | —
Buildings and improvements | 133,455 |  |  | 127,094 |  |  | 3 – 39 Years
Machinery and equipment | 99,840 |  |  | 94,889 |  |  | 3 – 15 Years
Furniture and fixtures | 3,056 |  |  | 2,885 |  |  | 3 – 10 Years
Construction in process | 2,110 |  |  | 3,317 |  |  | —
| $ | 262,897 |  |  | $ | 252,295 |  |  |
Less: Accumulated depreciation | (151,848) |  |  | (148,874) |  |  |
Total property, plant and equipment, net | $ | 111,049 |  |  | $ | 103,421 |  |  |
There were no assets under finance lease as of September 30, 2025 or September 30, 2024. Depreciation expense was $7.2 million, $6.9 million and $8.6 million for fiscal years 2025, 2024, and 2023, respectively. In Fiscal 2025, the expansion and improvement project at our electrical products facility in Houston, Texas was completed and the incremental capacity has been placed into service. Additionally, on August 15, 2025, we acquired land and buildings of $2.8 million related to the acquisition of Remsdaq. In Fiscal 2024, we acquired land and buildings in Houston for a total cash purchase price of approximately $5.6 million to help further facilitate executing the current backlog as well as planning for modest future volume growth. Accrued Product Warranty Activity in our product warranty accrual consisted of the following (in thousands):
| September 30,
| 2025 |  | 2024
Balance at beginning of period | $ | 5,822 |  |  | $ | 3,305 |
Increase to warranty expense | 5,714 |  |  | 7,525 |
Deduction for warranty charges | (5,169) |  |  | (5,039) |
Change due to foreign currency translation | (11) |  |  | 31 |
Balance at end of period | $ | 6,356 |  |  | $ | 5,822 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/210/tableOfContent + Details
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