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Business Segment Information (Tables) | 12 Months Ended
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Sep. 30, 2025
Business Segment Information |
Schedule of net sales and earnings before income tax | ​
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Year Ended September 30, 2025 |  | ​ | ​ |  | ​ |  | ​ | ​ | Segment | ​ | ​ | ​ | ​ |  | ​
(In thousands) | ​ | A&D | ​ | USG | ​ | Test |  | Total |  | Corporate | ​ | Total
Sales | ​ | $ | 478,192 |  | 379,995 |  | 237,201 | ​ | 1,095,388 | ​ | ​ | — | ​ |  | 1,095,388
Cost of sales | ​ |  | 296,688 |  | 176,976 |  | 160,639 | ​ | 634,303 | ​ | ​ | — | ​ |  | 634,303
SG&A expense | ​ |  | 53,050 |  | 99,520 |  | 38,987 | ​ | 191,557 | ​ | ​ | 43,081 | ​ | ​ | 234,638
Amortization of intangible assets | ​ |  | 1,465 |  | 8,563 |  | 1,978 | ​ | 12,006 | ​ | ​ | 41,311 | ​ |  | 53,317
Other expense (income), net | ​ |  | 1,850 |  | 195 |  | 1,486 | ​ | 3,531 | ​ | ​ | (756) | ​ |  | 2,775
Segment profit (loss) | ​ | $ | 125,139 |  | 94,741 |  | 34,111 | ​ | 253,991 | ​ | ​ | (83,636) | ​ |  | 170,355
Interest expense | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 17,502 | ​ |  | 17,502
Earnings before income taxes | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 152,853
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Depreciation and amortization | ​ | $ | 11,714 |  | 16,119 |  | 5,744 | ​ | 33,577 | ​ | ​ | 41,444 | ​ |  | 75,021
Segment assets | ​ |  | 409,789 | ​ | 289,505 | ​ | 206,944 | ​ | 906,238 | ​ | ​ | 1,504,150 | ​ | ​ | 2,410,388
Capital expenditures | ​ | $ | 18,758 |  | 9,478 |  | 5,048 | ​ | 33,284 | ​ | ​ | 3,038 | ​ |  | 36,322
​
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Year Ended September 30, 2024 |  | ​ | ​ |  | ​ |  | ​ |  | Segment | ​ |  | ​ | ​ |  | ​
(In thousands) | ​ | A&D | ​ | USG | ​ | Test | ​ | Total |  | Corporate |  | Total
Sales | ​ | $ | 340,543 |  | 369,061 |  | 209,523 | ​ | 919,127 | ​ | ​ | — | ​ |  | 919,127
Cost of sales | ​ |  | 211,112 |  | 176,803 |  | 142,640 | ​ | 530,555 | ​ | ​ | — | ​ | ​ | 530,555
SG&A expense | ​ |  | 42,231 |  | 97,396 |  | 35,351 | ​ | 174,978 | ​ | ​ | 33,225 | ​ |  | 208,203
Amortization of intangible assets | ​ |  | 1,876 |  | 8,414 |  | 1,816 | ​ | 12,106 | ​ | ​ | 20,698 | ​ |  | 32,804
Other expense (income), net | ​ |  | (487) |  | 530 |  | 1,088 | ​ | 1,131 | ​ | ​ | 234 | ​ |  | 1,365
Segment profit (loss) | ​ | $ | 85,811 |  | 85,918 |  | 28,628 | ​ | 200,357 | ​ | ​ | (54,157) | ​ |  | 146,200
Interest expense | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 15,247 | ​ |  | 15,247
Earnings before income taxes | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 130,953
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Depreciation and amortization | ​ | $ | 10,384 |  | 15,608 |  | 5,349 | ​ | 31,341 | ​ | ​ | 20,814 | ​ |  | 52,155
Segment assets | ​ |  | 267,775 |  | 294,494 |  | 188,663 | ​ | 750,932 | ​ | ​ | 954,313 | ​ |  | 1,705,245
Capital expenditures | ​ | $ | 15,926 |  | 8,751 |  | 3,529 | ​ | 28,206 | ​ | ​ | 69 | ​ |  | 28,275
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Year Ended September 30, 2023 |  | ​ | ​ |  | ​ |  | ​ |  | Segment | ​ | ​ | ​ | ​ | ​ | ​
(In thousands) | ​ | A&D | ​ | USG | ​ | Test | ​ | total |  | Corporate |  | Total
Sales | ​ | $ | 292,203 |  | 342,320 |  | 221,270 | ​ | 855,793 | ​ |  | — | ​ |  | 855,793
Cost of sales | ​ |  | 187,192 |  | 164,094 |  | 151,397 | ​ | 502,683 | ​ |  | — | ​ |  | 502,683
SG&A expense | ​ |  | 39,919 |  | 94,168 |  | 35,211 | ​ | 169,298 | ​ |  | 34,161 | ​ |  | 203,459
Amortization of intangible assets | ​ |  | 1,224 |  | 7,227 |  | 1,864 | ​ | 10,315 | ​ |  | 18,638 | ​ |  | 28,953
Other expense (income), net | ​ |  | 803 |  | 185 |  | 402 | ​ | 1,390 | ​ |  | 171 | ​ |  | 1,561
Segment profit (loss) | ​ | $ | 63,065 |  | 76,646 |  | 32,396 | ​ | 172,107 | ​ | ​ | (52,970) | ​ |  | 119,137
Interest expense | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 8,769 | ​ |  | 8,769
Earnings before income taxes | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 110,368
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Depreciation and amortization | ​ | $ | 9,770 |  | 13,964 |  | 5,268 | ​ | 29,002 | ​ |  | 18,707 | ​ |  | 47,709
Capital expenditures | ​ | $ | 10,138 |  | 4,856 |  | 4,515 | ​ | 19,509 | ​ |  | 150 | ​ |  | 19,659
​
Schedule Of Geographic Information Net Sale | Net Sales ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(Dollars in thousands) | ​ | ​ | ​ | ​ | ​ | ​ | ​
Year ended September 30, |  | 2025 |  | 2024 |  | 2023
United States | ​ | $ | 727,267 |  | 632,836 |  | 576,639
Asia | ​ |  | 111,844 |  | 108,423 |  | 114,698
Europe | ​ |  | 156,404 |  | 91,762 |  | 80,691
Canada | ​ |  | 56,693 |  | 50,728 |  | 46,822
Other | ​ |  | 43,180 |  | 35,378 |  | 36,943
Consolidated totals | ​ | $ | 1,095,388 |  | 919,127 |  | 855,793
Schedule Of Geographic Information Long-Lived Assets | Long-Lived Assets ​
​ | ​ | ​ | ​ | ​ | ​
(Dollars in thousands) | ​ | ​ | ​ | ​ | ​
Year ended September 30, |  | 2025 |  | 2024
United States | ​ | $ | 142,341 |  | 130,947
United Kingdom | ​ | ​ | 13,659 | ​ | 2,900
Other | ​ |  | 16,493 |  | 15,404
Consolidated totals | ​ | $ | 172,493 |  | 149,251

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