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Inventories (Tables)
12 Months Ended
Aug. 31, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories consist of the following:
(in thousands)
August 31, 2019
 
August 25, 2018
Finished goods
$
53,417

 
$
26,513

Work-in-process ("WIP")
82,926

 
68,339

Raw materials
105,804

 
139,039

Total
242,147

 
233,891

Less LIFO reserve
41,021

 
38,763

Inventories
$
201,126

 
$
195,128



Inventory valuation methods consist of the following:
(in thousands)
August 31, 2019
 
August 25, 2018
LIFO basis
$
184,007

 
$
176,215

FIFO basis
58,140

 
57,676

Total
$
242,147

 
$
233,891