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Business Segment Information - Schedule Of Depreciation And Amortization (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Depreciation and Amortization | $ 48,343 | $ 42,049 | $ 41,338
Aerospace & Defense |  |  |
Depreciation and Amortization | 11,100 | 10,400 | 9,400
USG |  |  |
Depreciation and Amortization | 12,600 | 13,500 | 14,400
Test |  |  |
Depreciation and Amortization | 5,400 | 5,200 | 5,000
Corporate |  |  |
Depreciation and Amortization | $ 19,200 | $ 12,900 | $ 12,500

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