Other Comprehensive Income (Details) - Reclassification out of Accumulated Other Comprehensive Income - Accumulated Defined Benefit Plans Adjustment - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Apr. 01, 2016	Mar. 31, 2017	Apr. 01, 2016
Amortization of Defined Benefit Items:
Actuarial losses	$ (3,530)	$ (4,307)	$ (7,086)	$ (8,768)
Prior service cost	78	59	155	120
Total Before Income Tax	(3,452)	(4,248)	(6,931)	(8,648)
Income Tax Benefit	799	1,015	1,602	2,061
Total reclassifications, after-tax	$ (2,653)	$ (3,233)	$ (5,329)	$ (6,587)