XML 116 R95.htm IDEA: XBRL DOCUMENT v3.25.0.1

Segment Disclosure - Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Revenue and long-lived assets by geographic area
Long-lived assets	$ 302,042	$ 312,320
Operating segments | North America
Revenue and long-lived assets by geographic area
Long-lived assets	268,608	279,358
Operating segments | International
Revenue and long-lived assets by geographic area
Long-lived assets	24,822	27,967
Operating segments | Products and Systems
Revenue and long-lived assets by geographic area
Long-lived assets	1,049	1,423
Corporate and eliminations
Revenue and long-lived assets by geographic area
Long-lived assets	$ 7,563	$ 3,572

X

- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

+ Details

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- 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.

+ References

No definition available.

+ Details

Name:	us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=mg_NorthAmericaSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=mg_InternationalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=mg_ProductsandSystemsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ConsolidationItemsAxis=mg_CorporateAndEliminationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: