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Inventories (Tables)
9 Months Ended
Feb. 28, 2023
Schedule of Components of Inventories

Inventories are stated at the lower of cost, determined by the first-in, first-out method, or net realizable value. The components of inventories follow:

 

(in thousands)

 

February 28, 2023

 

 

May 31, 2022

 

Raw materials

 

$

73,514

 

 

$

58,667

 

Work-in-process

 

 

7,054

 

 

 

6,388

 

Finished and purchased goods

 

 

63,295

 

 

 

57,258

 

 

$

143,863

 

 

$

122,313