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Inventories (Tables)
 9 Months Ended
May 27, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories consist of the following:
(In thousands)
 
May 27,
2017
 
August 27,
2016
Finished goods
 
$
13,857

 
$
19,129

Work-in-process
 
75,727

 
76,350

Raw materials
 
89,433

 
60,740

Total
 
179,017

 
156,219

LIFO reserve
 
(34,595
)
 
(33,697
)
Total inventories
 
$
144,422

 
$
122,522