Description of Business and Basis of Presentation - Summary of Concentration Percentage of Consolidated Net Sales (Detail) - Net Sales - Product Concentration Risk	3 Months Ended		6 Months Ended
	Nov. 30, 2025	Nov. 30, 2024	Nov. 30, 2025	Nov. 30, 2024
End Market - Automotive
Product Information [Line Items]
Percentage of Net sales	56.00%	52.00%	56.00%	51.00%
Detroit Three Automakers
Product Information [Line Items]
Percentage of Net sales	36.00%	32.00%	35.00%	32.00%
Largest Automotive Customers: Customer A
Product Information [Line Items]
Percentage of Net sales	15.00%	11.00%	14.00%	12.00%
Largest Automotive Customers: Customer B
Product Information [Line Items]
Percentage of Net sales	14.00%	15.00%	14.00%	14.00%