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Segment Information | 6 Months Ended
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Mar. 31, 2026
Segment Reporting [Abstract] |
Segment Information | Segment Information We manage our business as one reportable operating segment and our revenues are primarily generated from the development, design, manufacturing and servicing of custom-engineered equipment and systems for the distribution, control and monitoring of electrical energy. Our chief operating decision maker (“CODM”) is our chief executive officer. The CODM manages and allocates resources on a total consolidated basis by assessing performance of revenues and earnings before interest and taxes (“EBIT”) using actual-to-actual, actual-to-plan and actual-to-forecast variance analysis. The measure of segment profit and loss regularly provided to the CODM that is most consistent with GAAP is consolidated net income, as presented in our Consolidated Statements of Operations. The CODM does not manage cost components by product, customer type or service type, nor does the CODM regularly receive disaggregated information at this level. For the three and six months ended March 31, 2026 and 2025, the summary of segment net income, including segment expenses, for our single reportable segment were as follows (in thousands):
| Three months ended March 31, |  | Six months ended March 31,
| 2026 |  | 2025 |  | 2026 |  | 2025
Revenues | $ | 296,615 |  |  | $ | 278,631 |  |  | $ | 547,799 |  |  | $ | 520,062 |
Segment operating expenses: |  |  |  |  |  |  |
Cost of goods sold | 208,679 |  |  | 195,199 |  |  | 388,445 |  |  | 377,106 |
General and administrative expenses | 17,646 |  |  | 14,624 |  |  | 34,938 |  |  | 29,475 |
Sales and marketing expenses | 8,365 |  |  | 6,933 |  |  | 16,110 |  |  | 13,664 |
Research and development expenses | 4,289 |  |  | 2,746 |  |  | 7,556 |  |  | 5,222 |
Amortization | 223 |  |  | — |  |  | 445 |  |  | — |
Realized currency (gain) loss | (168) |  |  | 210 |  |  | (47) |  |  | 104 |
Total segment operating expenses | 239,034 |  |  | 219,712 |  |  | 447,447 |  |  | 425,571 |
Operating income / EBIT | 57,581 |  |  | 58,919 |  |  | 100,352 |  |  | 94,491 |
Interest income, net | (4,203) |  |  | (3,555) |  |  | (8,468) |  |  | (7,420) |
Income tax provision | 15,897 |  |  | 16,144 |  |  | 21,543 |  |  | 20,818 |
Segment net income | $ | 45,887 |  |  | $ | 46,330 |  |  | $ | 87,277 |  |  | $ | 81,093 |
Gross profit | $ | 87,936 |  |  | $ | 83,432 |  |  | $ | 159,354 |  |  | $ | 142,956 |
Revenues by country represent sales to unaffiliated customers as determined by the ultimate destination of our products and services, summarized for the three and six months ended March 31, 2026 and 2025 (in thousands):
| Three months ended March 31, |  | Six months ended March 31,
| 2026 |  | 2025 |  | 2026 |  | 2025
United States | $ | 232,272 |  |  | $ | 227,834 |  |  | $ | 427,150 |  |  | $ | 425,606 |
Canada | 29,823 |  |  | 33,970 |  |  | 62,282 |  |  | 65,664 |
Middle East and Africa | 13,618 |  |  | 8,282 |  |  | 23,490 |  |  | 12,840 |
Europe | 10,478 |  |  | 5,897 |  |  | 18,704 |  |  | 11,425 |
Asia/Pacific | 9,840 |  |  | 1,646 |  |  | 15,143 |  |  | 3,226 |
Mexico, Central and South America | 584 |  |  | 1,002 |  |  | 1,030 |  |  | 1,301 |
Total revenues | $ | 296,615 |  |  | $ | 278,631 |  |  | $ | 547,799 |  |  | $ | 520,062 |
Long-lived assets by country consist of property, plant and equipment, net of accumulated depreciation and are determined based on the location of the tangible assets, summarized below (in thousands):
| March 31, 2026 |  | September 30, 2025
Long-lived assets: |  |  |
United States | $ | 72,540 |  |  | $ | 70,699 |
Canada | 32,102 |  |  | 32,744 |
United Kingdom | 7,180 |  |  | 7,606 |
Total | $ | 111,822 |  |  | $ | 111,049 |

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-21 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name 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