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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 18,970	$ (17,445)	$ 6,574
Other comprehensive income (loss):
Foreign currency translation adjustments	(14,342)	5,058	(13,084)
Comprehensive income (loss)	4,628	(12,387)	(6,510)
Less: net income attributable to noncontrolling interests, net of taxes	12	8	75
Less: Foreign currency translation adjustments attributable to noncontrolling interests	4	4	(5)
Comprehensive income (loss) attributable to Mistras Group, Inc.	$ 4,612	$ (12,399)	$ (6,580)

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