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v3.26.1

Income Taxes - Additional Information (Detail) - USD ($) | Mar. 31, 2026 | Mar. 31, 2025
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IRELAND |  |
Deferred Tax Liabilities Valuation Allowance | $ 452,000 | $ 435,000
UNITED KINGDOM |  |
Deferred Tax Liabilities Valuation Allowance | $ 435,000 | $ 452,000

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- 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

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |