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Inventories
3 Months Ended
Nov. 30, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories

Inventories consist of the following:
(in thousands)
November 30,
2019
 
August 31,
2019
Finished goods
$
77,315

 
$
53,417

Work-in-process
105,779

 
82,926

Raw materials
121,592

 
105,804

Total
304,686

 
242,147

Less last-in, first-out ("LIFO") reserve
41,353

 
41,021

Inventories, net
$
263,333

 
$
201,126



Inventory valuation methods consist of the following:
(in thousands)
November 30,
2019
 
August 31,
2019
LIFO basis
$
164,340

 
$
184,007

First-in, first-out basis
140,346

 
58,140

Total
$
304,686

 
$
242,147



The above value of inventories, before reduction for the LIFO reserve, approximates replacement cost at the respective dates.