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Income Taxes - Additional Information (Detail) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
UNITED KINGDOM
Deferred Tax Liabilities Valuation Allowance	$ 452,000	$ 452,000

X

- Definition

Deferred tax liabilities valuation allowance.

+ References

No definition available.

+ Details

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Namespace Prefix:	mhh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	srt_StatementGeographicalAxis=country_GB
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: