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Inventories (Tables)
6 Months Ended
Oct. 24, 2020
Inventory Disclosure [Abstract]  
Summary of inventories
A summary of inventories is as follows:

(Unaudited, amounts in thousands)10/24/204/25/20
Raw materials$91,742 $92,174 
Work in process17,759 14,064 
Finished goods100,596 96,850 
FIFO inventories210,097 203,088 
Excess of FIFO over LIFO(21,445)(21,445)
Total inventories$188,652 $181,643