Inventories (Details) - USD ($) $ in Thousands	Jul. 30, 2022	Apr. 30, 2022
Inventory Disclosure [Abstract]
Raw materials	$ 153,299	$ 146,896
Work in process	32,671	36,834
Finished goods	209,895	185,870
FIFO inventories	395,865	369,600
Excess of FIFO over LIFO	(64,019)	(66,409)
Total inventories	$ 331,846	$ 303,191