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Segment Information (Segment Sales By Customer Type) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 29, 2018 | Dec. 30, 2017
Segment Reporting Information |  |
Net sales | $ 679,676 | $ 627,535
Aircraft Controls |  |
Segment Reporting Information |  |
Net sales | 304,045 | 278,534
Aircraft Controls | Military |  |
Segment Reporting Information |  |
Net sales | 146,801 | 124,200
Aircraft Controls | Commercial |  |
Segment Reporting Information |  |
Net sales | 157,244 | 154,334
Space And Defense Controls |  |
Segment Reporting Information |  |
Net sales | 156,068 | 133,393
Space And Defense Controls | Space |  |
Segment Reporting Information |  |
Net sales | 50,176 | 49,413
Space And Defense Controls | Defense |  |
Segment Reporting Information |  |
Net sales | 105,892 | 83,980
Industrial Systems |  |
Segment Reporting Information |  |
Net sales | 219,563 | 215,608
Industrial Systems | Energy |  |
Segment Reporting Information |  |
Net sales | 29,297 | 38,102
Industrial Systems | Industrial Automation |  |
Segment Reporting Information |  |
Net sales | 109,130 | 96,445
Industrial Systems | Simulation and Test |  |
Segment Reporting Information |  |
Net sales | 29,050 | 30,837
Industrial Systems | Medical |  |
Segment Reporting Information |  |
Net sales | $ 52,086 | $ 50,224

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