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Segment Information (Summary of Consolidated Net Sales and Earnings by Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |
Total net sales | $ 541,586 | $ 537,619
Interest expense, net | (7,665) | (8,411)
Consolidated earnings before income taxes | 37,746 | 47,584
Aerospace [Member] |  |
Segment Reporting Information [Line Items] |  |
Total net sales | 336,435 | 321,667
Industrial [Member] |  |
Segment Reporting Information [Line Items] |  |
Total net sales | 205,151 | 215,952
Operating Segments [Member] | Aerospace [Member] |  |
Segment Reporting Information [Line Items] |  |
Total net sales | 336,435 | 321,667
Segment earnings (loss) | 51,083 | 46,466
Operating Segments [Member] | Industrial [Member] |  |
Segment Reporting Information [Line Items] |  |
Total net sales | 205,151 | 215,952
Segment earnings (loss) | 23,693 | 32,888
Unallocated Corporate [Member] |  |
Segment Reporting Information [Line Items] |  |
Segment earnings (loss) | $ (29,365) | $ (23,359)

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