Restructuring - Summary of Restructuring Charges by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2025	Aug. 31, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]	Operating Income (Loss)	Operating Income (Loss)
Restructuring charges	$ 332	$ 370
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(127)	238
Operating Segments \| Food Safety
Restructuring Cost and Reserve [Line Items]
Restructuring charges	407	132
Operating Segments \| Animal Safety
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 52	$ 0

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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NEOGEN CORP 10-Q