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Inventories
12 Months Ended
Aug. 29, 2020
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following:
(in thousands)August 29, 2020August 31, 2019
Finished goods$17,141 $53,417 
Work-in-process ("WIP")86,651 82,926 
Raw materials114,982 105,804 
Total218,774 242,147 
Less LIFO reserve35,833 41,021 
Inventories$182,941 $201,126 

Inventory valuation methods consist of the following:
(in thousands)August 29, 2020August 31, 2019
LIFO basis$88,675 $184,007 
FIFO basis130,099 58,140 
Total$218,774 $242,147 

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

Our inventory quantities were reduced during Fiscal 2020, resulting in a liquidation of LIFO inventory layers (a "LIFO decrement"). A LIFO decrement results in the erosion of layers created in earlier years, and, therefore, a LIFO layer is not created for years that
have decrements. The Company had a decrement of its LIFO inventory layers of $5.2 million in Fiscal 2020. There was no LIFO decrement recorded in Fiscal 2019.