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Inventories (Tables)
 9 Months Ended
Jul. 01, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory, net of reserves
 
 
July 1,
2017
 
October 1,
2016
Raw materials and purchased parts
 
$
177,344

 
$
174,331

Work in progress
 
225,898

 
235,258

Finished goods
 
71,808

 
69,451

Inventories
 
$
475,050

 
$
479,040