Goodwill And Intangible Assets (Goodwill Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Dec. 30, 2017
Space And Defense Controls
Goodwill [Line Items]
Goodwill, accumulated impairment loss		$ 4,800
Industrial Systems
Goodwill [Line Items]
Goodwill, accumulated impairment loss		$ 38,200
Goodwill | Space And Defense Controls
Goodwill [Line Items]
Prior period reclassification adjustment	$ 86,995
Goodwill | Industrial Systems
Goodwill [Line Items]
Prior period reclassification adjustment	$ 224,194