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Concentrations - Additional Information (Detail) | Mar. 31, 2022 Entity
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Risks And Uncertainties [Abstract] |
Number of financial institutions | 2

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- Definition The number of financial institutions. + References No definition available. + Details
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Namespace Prefix: | mchx_
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Balance Type: | na
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- References No definition available. + Details
Name: | us-gaap_RisksAndUncertaintiesAbstract
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