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Inventories (Tables)
 6 Months Ended
Apr. 01, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory, net of reserves
 
 
April 1,
2017
 
October 1,
2016
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