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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 6,574	$ 3,893	$ (99,466)
Other comprehensive income (loss):
Foreign currency translation adjustments	(13,084)	(4,252)	5,227
Comprehensive loss	(6,510)	(359)	(94,239)
Less: net income (loss) attributable to noncontrolling interests, net of taxes	75	33	(5)
Less: Foreign currency translation adjustments attributable to noncontrolling interests	(5)	(2)	3
Comprehensive loss attributable to Mistras Group, Inc.	$ (6,580)	$ (390)	$ (94,237)

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