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GOODWILL AND OTHER INTANGIBLE ASSETS | 3 Months Ended
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Dec. 31, 2023
GOODWILL AND OTHER INTANGIBLE ASSETS |
GOODWILL AND OTHER INTANGIBLE ASSETS |
6. | GOODWILL AND OTHER INTANGIBLE ASSETS
Included on the Company’s Consolidated Balance Sheets at December 31, 2023 and September 30, 2023 are the following intangible assets gross carrying amounts and accumulated amortization from continuing operations: ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | September 30,
(Dollars in thousands) |  | 2023 |  | 2023
Goodwill | ​ | $ | 537,601 |  | 503,177
​ | ​ |  | ​ | ​ | ​
Intangible assets with determinable lives: | ​ |  | ​ | ​ | ​
Patents | ​ |  | ​ | ​ | ​
Gross carrying amount | ​ | $ | 2,517 | ​ | 2,516
Less: accumulated amortization | ​ |  | 1,253 | ​ | 1,218
Net | ​ | $ | 1,264 | ​ | 1,298
​ | ​ |  | ​ | ​ | ​
Capitalized software | ​ |  | ​ | ​ | ​
Gross carrying amount | ​ | $ | 125,237 | ​ | 121,883
Less: accumulated amortization | ​ |  | 83,709 | ​ | 80,774
Net | ​ | $ | 41,528 | ​ | 41,109
​ | ​ |  | ​ | ​ | ​
Customer relationships | ​ |  | ​ | ​ | ​
Gross carrying amount | ​ | $ | 328,624 | ​ | 296,927
Less: accumulated amortization | ​ |  | 117,755 | ​ | 113,311
Net | ​ | $ | 210,869 | ​ | 183,616
​ | ​ |  | ​ | ​ | ​
Other | ​ |  | ​ | ​ | ​
Gross carrying amount | ​ | $ | 15,216 | ​ | 14,232
Less: accumulated amortization | ​ |  | 10,033 | ​ | 9,578
Net | ​ | $ | 5,183 | ​ | 4,654
Intangible assets with indefinite lives: | ​ |  | ​ | ​ | ​
Trade names | ​ | $ | 163,209 | ​ | 161,447
​ The changes in the carrying amount of goodwill attributable to each business segment for the three months ended December 31, 2023 are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Aerospace | ​ | ​
(Dollars in millions) |  | USG |  | Test |  | & Defense |  | Total
Balance as of September 30, 2023 | ​ | $ | 353.6 |  | ​ | 34.0 |  | 115.6 |  | 503.2
Acquisition activity | ​ | ​ | — | ​ | ​ | 30.3 | ​ | — | ​ | 30.3
Foreign currency translation | ​ | ​ | 3.3 | ​ | ​ | 0.8 | ​ | — | ​ | 4.1
Balance as of December 31, 2023 | ​ | $ | 356.9 | ​ | ​ | 65.1 | ​ | 115.6 | ​ | 537.6
​

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 350 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//350/tableOfContent + Details
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