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Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net income (loss) attributable to Mistras Group, Inc.	$ 6,401	$ (10,298)	$ 13,765	$ (14,947)

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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