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v3.22.2.2

Income Taxes - Additional Information (Detail) - USD ($) | Jun. 30, 2022 | Dec. 31, 2021
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Deferred Tax Liabilities Valuation Allowance | $ 515,000 | $ 311,000

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- Definition Deferred tax liabilities valuation allowance. + References No definition available. + Details
Name: | mhh_DeferredTaxLiabilitiesValuationAllowance
Namespace Prefix: | mhh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant