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Inventories (Schedule of Inventory)(Details) - USD ($)
$ in Thousands
Apr. 01, 2017
Oct. 01, 2016
Inventory Disclosure [Abstract]    
Raw materials and purchased parts $ 168,293 $ 174,331
Work in progress 224,270 235,258
Finished goods 65,648 69,451
Inventories $ 458,211 $ 479,040