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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables) | 3 Months Ended
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Dec. 31, 2024
GOODWILL AND OTHER INTANGIBLE ASSETS |
Schedule of intangible assets gross carrying amounts and accumulated amortization from continuing operations | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | September 30,
(Dollars in thousands) |  | 2024 |  | 2024
Goodwill | ​ | $ | 532,312 | ​ | 539,899
​ | ​ |  | ​ | ​ | ​
Intangible assets with determinable lives: | ​ |  | ​ | ​ | ​
Patents | ​ |  | ​ | ​ | ​
Gross carrying amount | ​ | $ | 2,635 | ​ | 2,638
Less: accumulated amortization | ​ |  | 1,467 | ​ | 1,415
Net | ​ | $ | 1,168 | ​ | 1,223
​ | ​ |  | ​ | ​ | ​
Capitalized software | ​ |  | ​ | ​ | ​
Gross carrying amount | ​ | $ | 136,634 | ​ | 134,119
Less: accumulated amortization | ​ |  | 95,844 | ​ | 92,878
Net | ​ | $ | 40,790 | ​ | 41,241
​ | ​ |  | ​ | ​ | ​
Customer relationships | ​ |  | ​ | ​ | ​
Gross carrying amount | ​ | $ | 326,027 | ​ | 330,328
Less: accumulated amortization | ​ |  | 136,922 | ​ | 132,135
Net | ​ | $ | 189,105 | ​ | 198,193
​ | ​ |  | ​ | ​ | ​
Other | ​ |  | ​ | ​ | ​
Gross carrying amount | ​ | $ | 14,917 | ​ | 15,182
Less: accumulated amortization | ​ |  | 11,361 | ​ | 11,173
Net | ​ | $ | 3,556 | ​ | 4,009
Intangible assets with indefinite lives: | ​ |  | ​ | ​ | ​
Trade names | ​ | $ | 161,683 | ​ | 162,936
Schedule of carrying amount of goodwill attributable to each business segment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(Dollars in millions) |  | USG |  | Test |  | A&D |  | Total
Balance as of September 30, 2024 | ​ | $ | 356.9 |  | ​ | 67.4 |  | 115.6 |  | 539.9
Foreign currency translation | ​ | ​ | (5.5) | ​ | ​ | (2.1) | ​ | — | ​ | (7.6)
Balance as of December 31, 2024 | ​ | $ | 351.4 | ​ | ​ | 65.3 | ​ | 115.6 | ​ | 532.3
​

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