v3.25.2
Cover Page
Mar. 16, 2021
Cover [Abstract]  
Document Type 8-K
Document Period End Date Aug. 06, 2025
Entity Registrant Name Mistras Group, Inc.
Entity Incorporation, State or Country Code DE
Entity File Number 001-34481
Entity Tax Identification Number 22-3341267
Entity Address, Address Line One 195 Clarksville Road
Entity Address, Postal Zip Code 08550
Entity Address, City or Town Princeton Junction,
Entity Address, State or Province NJ
City Area Code 609
Local Phone Number 716-4000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.01 par value
Trading Symbol MG
Security Exchange Name NYSE
Entity Emerging Growth Company false
Entity Central Index Key 0001436126
Amendment Flag false