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Segment Information (Reconciliation of Operating Profit from Segments to Consolidated) (Details) - Operating Income (Loss) [Member] - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Apr. 01, 2017	Apr. 01, 2017
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated
Prior period reclassification adjustment	$ 10,840	$ 22,294
Space And Defense Controls
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated
Prior period reclassification adjustment	893	2,885
Industrial Systems
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated
Prior period reclassification adjustment	$ 9,947	$ 19,409

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